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/