CONDITIONALS

http://www.englisch-hilfen.de/en/exercises_list/if.htm

https://www.ego4u.com/en/cram-up/grammar/conditional-sentences

Zero and First Conditional

http://www.agendaweb.org/verbs/conditional-verbs-exercises.html

http://www.agendaweb.org/verbs/conditional-first-exercises.html

http://www.perfect-english-grammar.com/first-conditional-exercise-1.html

http://www.perfect-english-grammar.com/conditional-exercises.html

http://www.englishpage.com/conditional/conditional1.htm

First and Second Conditional

http://www.agendaweb.org/verbs/conditional-second-exercises.html

http://www.perfect-english-grammar.com/second-conditional-exercise-1.html

http://www.first-english.org/english_learning/if_clauses_conditional/60_if_clauses_test_type_1_type_2.htm

http://www.first-english.org/english_learning/if_clauses_conditional/61_if_clauses_tests_type_1_type_2.htm

Third Conditional

http://www.agendaweb.org/verbs/conditional-third-exercises.html

http://www.perfect-english-grammar.com/third-conditional-exercise-1.html

http://www.first-english.org/english_learning/if_clauses_conditional/40_if_clauses_type_3_exercises.htm

http://www.first-english.org/english_learning/if_clauses_conditional/42_if_clauses_type_3.htm

http://www.first-english.org/english_learning/if_clauses_conditional/46_if_clauses_type_3_online_exercises.htm

http://www.first-english.org/english_learning/if_clauses_conditional/47_if_sentences_type_3_tests_exercises.htm

Mixing Conditionals

http://www.agendaweb.org/verbs/conditional-mixed-exercises.html

https://www.ego4u.com/en/cram-up/grammar/conditional-sentences/exercises?05

http://www.myenglishpages.com/site_php_files/grammar-exercise-conditionals.php

http://www.perfect-english-grammar.com/first-second-third-conditionals-exercise.html

http://www.first-english.org/english_learning/if_clauses_conditional/63_if_clauses_tests_type_1_type_2_type_3.htm

http://www.first-english.org/english_learning/if_clauses_conditional/66_if_clauses_conditional_exercises_test.htm

http://www.first-english.org/english_learning/if_clauses_conditional/67_if_conditional_multiple_choice.htm

http://www.agendaweb.org/verbs/conditional-mixed-upper-intermediate-exercises.html

http://www.agendaweb.org/verbs/conditional-mixed-advanced-exercises.html

USED TO, GET USED TO, BE USED TO

http://speakspeak.com/english-grammar-exercises/intermediate/used-to-be-used-to-get-used-to

http://www.englishexercises.org/makeagame/viewgame.asp?id=2447

http://www.ejerciciodeingles.com/ejercicios-used-to-be-used-to-get-used-to-rellenar-huecos/

http://www.myenglishpages.com/site_php_files/grammar-exercise-used-to.php

http://www.autoenglish.org/modalverbs/gr.used.i.htm

http://www.esl-lounge.com/student/grammar/4g68-used-to-be-used-to.php

http://www.tolearnenglish.com/exercises/exercise-english-2/exercise-english-80920.php

http://www.usingenglish.com/quizzes/115.html

http://www.agendaweb.org/verbs/to-be-used-to.html

FUTURE TENSES

http://www.englishpage.com/verbpage/verbs18.htm

http://www.englishpage.com/verbpage/verbs19.htm

http://www.englishpage.com/verbpage/verbs20.htm

http://www.englishpage.com/verbpage/verbs21.htm

http://www.englishpage.com/verbpage/verbs22.htm

http://www.englishpage.com/verbpage/verbs23.htm

http://www.englishpage.com/verbpage/verbs24.htm

http://www.englishpage.com/verbpage/verbs25.htm

http://www.englishpage.com/verbpage/verbs26.htm

http://www.englishpage.com/verbpage/verbs27.htm

http://www.englishpage.com/verbpage/verbs28.htm

http://www.englisch-hilfen.de/en/exercises/tenses/future.htm

http://www.englisch-hilfen.de/en/exercises/tenses/future2.htm

http://www.englisch-hilfen.de/en/exercises/tenses/future_rules.htm

http://www.englisch-hilfen.de/en/exercises/tenses/will_going_to_future.htm

http://www.englisch-hilfen.de/en/exercises/tenses/will_going_to_future2.htm

TIME CLAUSES

http://www.e-grammar.org/time-clauses/test1-exercise1/

http://www.e-grammar.org/time-clauses/test2-exercise1/

http://www.e-grammar.org/time-clauses/test2-exercise2/

http://www.e-grammar.org/time-clauses/test1-exercise2/

http://www.tolearnenglish.com/exercises/exercise-english-2/exercise-english-13727.php

http://wwwedu.ge.ch/cptic/prospective/projets/anglais/exercises/time1.htm

http://www.english-test.net/esl/learn/english/grammar/ii142/esl-test.php

http://www.egeacademy.com/blog/exercises/future-time-clauses-when-before-after-as-soon-as-until/

RELATIVE CLAUSES

https://www.ego4u.com/en/cram-up/grammar/relative-clauses/exercises?02

https://www.ego4u.com/en/cram-up/grammar/relative-clauses/exercises?05

https://www.ego4u.com/en/cram-up/grammar/relative-clauses/exercises?10

https://www.ego4u.com/en/cram-up/grammar/relative-clauses/exercises?06

https://www.ego4u.com/en/cram-up/grammar/relative-clauses/exercises?11

https://www.ego4u.com/en/read-on/countries/uk/tour/stonehenge#exercises

https://www.ego4u.com/en/cram-up/grammar/relative-clauses/exercises?09

https://www.ego4u.com/en/cram-up/grammar/relative-clauses/exercises

https://www.ego4u.com/en/cram-up/grammar/relative-clauses/exercises?08

https://www.ego4u.com/en/cram-up/grammar/relative-clauses/exercises?04

https://www.ego4u.com/en/cram-up/grammar/relative-clauses/exercises?07

http://speakspeak.com/english-grammar-exercises/intermediate/relative-pronouns-who-which-that-whose-when-where

http://www.perfect-english-grammar.com/relative-clauses-exercise-1.html

http://www.perfect-english-grammar.com/relative-clauses-exercise-2.html

http://www.perfect-english-grammar.com/relative-clauses-exercise-3.html

http://www.agendaweb.org/grammar/relative_pronouns_clauses-exercises.html

MODAL VERBS REVISION

http://www.englishpage.com/modals/interactivemodal1.htm

http://www.englishpage.com/modals/interactivemodal2.htm

http://www.englishpage.com/modals/interactivemodal3.htm

http://www.englishpage.com/modals/interactivemodal4.htm

http://www.englishpage.com/modals/interactivemodal5.htm

http://www.englishpage.com/modals/interactivemodal6.htm

http://www.englishpage.com/modals/interactivemodal7.htm

http://www.englishpage.com/modals/interactivemodal8.htm

http://www.perfect-english-grammar.com/modal-verbs-of-ability-exercise-1.html

http://www.perfect-english-grammar.com/modal-verbs-of-obligation-exercise-1.html

http://www.perfect-english-grammar.com/modal-verbs-of-probability-exercise-1.html

http://www.perfect-english-grammar.com/modal-verbs-of-probability-exercise-2.html

http://www.englishexercises.org/makeagame/viewgame.asp?id=2229

http://www.agendaweb.org/verbs/modals-exercises.html

Perfect modals

http://www.perfect-english-grammar.com/could-have-should-have-would-have-exercise-1.html

http://www.autoenglish.org/modalverbs/gr.might.i.htm

http://www.englishexercises.org/makeagame/viewgame.asp?id=9331

http://www.esl-classroom.com/grammar/perfmodals1.html

http://www.esl-classroom.com/grammar/perfmodals2.html

http://www.esl-lounge.com/student/grammar/4g66-past-modals-exercise.php

PAST AND PRESENT TENSES

http://www.englishpage.com/verbpage/verbs16.htm

http://www.englishpage.com/verbpage/verbs17.htm

http://www.english-4u.de/tenses_ex1.htm

http://www.english-4u.de/tenses_ex2.htm

http://www.english-4u.de/tenses_ex3.htm

http://www.english-4u.de/tenses_ex9.htm

http://www.english-4u.de/tenses_ex10.htm

PAST SIMPLE VS PAST PERFECT SIMPLE

https://www.ego4u.com/en/cram-up/grammar/simpas-pasper/exercises

https://www.ego4u.com/en/cram-up/grammar/simpas-pasper/exercises?ex02

https://www.ego4u.com/en/cram-up/grammar/simpas-pasper/exercises?ex03

https://www.ego4u.com/en/cram-up/grammar/simpas-pasper/exercises?ex04

https://www.ego4u.com/en/read-on/countries/usa/tour/orlando

https://www.ego4u.com/en/cram-up/grammar/simpas-pasper/exercises?ex06

https://www.ego4u.com/en/cram-up/grammar/simpas-pasper/exercises?ex07

https://www.ego4u.com/en/cram-up/grammar/simpas-pasper/exercises?ex08

https://www.ego4u.com/en/cram-up/grammar/simpas-pasper/tests?test1

https://www.ego4u.com/en/cram-up/grammar/simpas-pasper/tests?test2

http://www.englisch-hilfen.de/en/exercises/tenses/past_perfect_simple_past.htm

http://www.english-4u.de/past_perfect_ex5.htm

http://www.englishtenses.com/test/past_perfect_or_past_simple

http://first-english.org/english_learning/english_tenses/comparison_tenses/40_simple_past_or_past_perfect_exercises.htm

http://www.englishpage.com/verbpage/verbs11.htm

https://english.lingolia.com/en/grammar/tenses-comparison/simple-past-past-perfect/exercises

PRESENT PERFECT SIMPLE VS PRESENT PERFECT CONTINUOUS

http://www.englishpage.com/verbpage/verbs7.htm

http://www.englishpage.com/verbpage/verbs8.htm

http://www.perfect-english-grammar.com/present-perfect-present-perfect-continuous-1.html

http://www.perfect-english-grammar.com/present-perfect-present-perfect-continuous-2.html

http://www.perfect-english-grammar.com/present-perfect-present-perfect-continuous-3.html

https://www.ego4u.com/en/cram-up/grammar/prepersim-preperpro/exercises

https://www.ego4u.com/en/cram-up/grammar/prepersim-preperpro/exercises?ex02

https://www.ego4u.com/en/cram-up/grammar/prepersim-preperpro/exercises?ex03

https://www.ego4u.com/en/cram-up/grammar/prepersim-preperpro/exercises?ex04

https://www.ego4u.com/en/cram-up/grammar/prepersim-preperpro/exercises?ex05

https://www.ego4u.com/en/cram-up/grammar/prepersim-preperpro/exercises?ex06

https://www.ego4u.com/en/cram-up/grammar/prepersim-preperpro/exercises?ex07

https://www.ego4u.com/en/cram-up/grammar/prepersim-preperpro/exercises?ex08

https://www.ego4u.com/en/cram-up/grammar/prepersim-preperpro/exercises?ex09

https://www.ego4u.com/en/cram-up/grammar/prepersim-preperpro/exercises?ex10

https://www.ego4u.com/en/cram-up/grammar/prepersim-preperpro/exercises?ex11

https://www.ego4u.com/en/cram-up/grammar/prepersim-preperpro/tests?test1

https://www.ego4u.com/en/cram-up/grammar/prepersim-preperpro/tests?test2

http://esl.fis.edu/grammar/multi/ppsppc.htm

http://www.tolearnenglish.com/exercises/exercise-english-2/exercise-english-30523.php

http://www.englisch-hilfen.de/en/exercises/tenses/present_perfect_or_progressive.htm

http://www.englisch-hilfen.de/en/exercises/tenses/simple_present_progressive2.htm

http://www.englisch-hilfen.de/en/exercises/tenses/simple_present_progressive3.htm

http://www.autoenglish.org/gr.percon.i.htm

PAST SIMPLE VS PRESENT PERFECT SIMPLE

http://www.englishpage.com/verbpage/verbs5.htm

http://www.englishpage.com/verbpage/verbs6.htm

https://www.ego4u.com/en/cram-up/grammar/simpas-preper/exercises

https://www.ego4u.com/en/cram-up/grammar/simpas-preper/exercises?ex02

https://www.ego4u.com/en/cram-up/grammar/simpas-preper/exercises?ex03

https://www.ego4u.com/en/cram-up/grammar/simpas-preper/exercises?ex04

https://www.ego4u.com/en/cram-up/grammar/simpas-preper/exercises?ex05

https://www.ego4u.com/en/cram-up/grammar/simpas-preper/exercises?ex06

https://www.ego4u.com/en/cram-up/grammar/simpas-preper/exercises?ex07

https://www.ego4u.com/en/cram-up/grammar/simpas-preper/exercises?ex08

https://www.ego4u.com/en/read-on/countries/usa/tour/grand-canyon#exercises

https://www.ego4u.com/en/read-on/countries/uk/tour/edinburgh#exercises

https://www.ego4u.com/en/cram-up/grammar/simpas-preper/tests?test1

https://www.ego4u.com/en/cram-up/grammar/simpas-preper/tests?test2

https://www.ego4u.com/en/cram-up/grammar/simpas-preper/tests?test3

http://www.englisch-hilfen.de/en/exercises/tenses/simple_past_present_perfect.htm

http://www.englisch-hilfen.de/en/exercises/tenses/simple_past_present_perfect2.htm

http://www.englisch-hilfen.de/en/exercises/tenses/simple_past_present_perfect3.htm

http://www.englisch-hilfen.de/en/exercises/tenses/simple_past_present_perfect4.htm

http://www.perfect-english-grammar.com/past-simple-present-perfect-1.html

http://www.perfect-english-grammar.com/past-simple-present-perfect-2.html

http://www.perfect-english-grammar.com/past-simple-present-perfect-3.html

http://www.perfect-english-grammar.com/past-simple-present-perfect-4.html

http://www.curso-ingles.com/practicar/ejercicios/present-perfect-vs-past-simple

http://www.usingenglish.com/quizzes/228.html

http://web2.uvcs.uvic.ca/elc/studyzone/410/grammar/ppvpast1.htm

http://www.agendaweb.org/verbs/present-perfect-simple-past-simple-exercises.html

PAST SIMPLE VS PAST CONTINUOUS

http://www.englishpage.com/verbpage/verbs4.htm

http://www.englishpage.com/verbpage/verbs3.htm

http://www.perfect-english-grammar.com/past-simple-past-continuous-exercise-1.html

http://www.perfect-english-grammar.com/past-simple-past-continuous-exercise-2.html

https://www.ego4u.com/en/cram-up/grammar/simpas-paspro/exercises

https://www.ego4u.com/en/cram-up/grammar/simpas-paspro/exercises?ex02

https://www.ego4u.com/en/cram-up/grammar/simpas-paspro/exercises?ex03

https://www.ego4u.com/en/cram-up/grammar/simpas-paspro/exercises?ex04

https://www.ego4u.com/en/cram-up/grammar/simpas-paspro/exercises?ex05

https://www.ego4u.com/en/cram-up/grammar/simpas-paspro/exercises?ex06

https://www.ego4u.com/en/cram-up/grammar/simpas-paspro/exercises?ex07

https://www.ego4u.com/en/cram-up/grammar/simpas-paspro/exercises?ex08

https://elt.oup.com/student/project3rdedition/level5/unit1/grammar/exercise1?cc=us&selLanguage=en

http://www.englishexercises.org/makeagame/viewgame.asp?id=734

http://www.englisch-hilfen.de/en/exercises/tenses/simple_past_progressive.htm

http://www.englisch-hilfen.de/en/exercises/tenses/simple_past_progressive2.htm

http://baladre.info/english/sedaviwebfront/pastsimplecontinuous.htm

http://www.agendaweb.org/verbs/past-continuous-past-simple-exercises.html

PRESENT SIMPLE VS PRESENT CONTINUOUS

http://www.englishpage.com/verbpage/verbs1.htm

http://www.englishpage.com/verbpage/verbs2.htm

https://www.ego4u.com/en/cram-up/grammar/simpre-prepro/exercises

https://www.ego4u.com/en/cram-up/grammar/simpre-prepro/exercises?ex02

https://www.ego4u.com/en/cram-up/grammar/simpre-prepro/exercises?ex03

https://www.ego4u.com/en/cram-up/grammar/simpre-prepro/exercises?ex04

https://www.ego4u.com/en/cram-up/grammar/simpre-prepro/exercises?ex05

https://www.ego4u.com/en/cram-up/grammar/simpre-prepro/exercises?ex06

https://www.ego4u.com/en/cram-up/grammar/simpre-prepro/exercises?ex07

https://www.ego4u.com/en/cram-up/grammar/simpre-prepro/exercises?ex08

https://www.ego4u.com/en/cram-up/grammar/simpre-prepro/exercises?ex09

https://www.ego4u.com/en/cram-up/grammar/simpre-prepro/exercises?ex10

https://www.ego4u.com/en/cram-up/grammar/simpre-prepro/exercises?ex11

https://www.ego4u.com/en/cram-up/grammar/simpre-prepro/exercises?ex12

https://www.ego4u.com/en/cram-up/grammar/simpre-prepro/tests?test1

https://www.ego4u.com/en/cram-up/grammar/simpre-prepro/tests?test2

https://www.ego4u.com/en/cram-up/grammar/simpre-prepro/tests?test3

http://www.perfect-english-grammar.com/present-simple-present-continuous-1.html

http://www.perfect-english-grammar.com/present-simple-present-continuous-2.html

http://www.perfect-english-grammar.com/present-simple-present-continuous-3.html

http://www.englisch-hilfen.de/en/exercises/tenses/simple_present_progressive2.htm

https://elt.oup.com/student/solutions/preint/grammar/grammar_01_012e?cc=global&selLanguage=en

http://web2.uvcs.uvic.ca/elc/studyzone/330/grammar/simcon1.htm

http://www.englishexercises.org/makeagame/viewgame.asp?id=1438

http://www.agendaweb.org/verbs/present-continuous-tense.html

http://www.englishexercises.org/makeagame/viewgame.asp?id=2946

http://www.carmenlu.com/first/grammar/presentcont11.htm

http://english-exercise.net/grammar/verb-conjugation/present-simple-and-continuous-2/