Marked grammar tests with answers and recommended grammar lessons to improve your English.
Mixed tenses - test 1:
Mixed tenses - test 2:
Mixed tenses - test 3:
Tenses in time clauses and conditional sentences - test 4:
Tenses in the reported speech and passive voice - test 5:
Other forms - test 6:
More PDF exercises on English grammar:
For beginners to advanced students of English as a second language.