Topics: Present Perfect Simple & Present Perfect Continuous
Animal conservation ___ more important in the last 100 years
A. became
B. has become
Select your answer:

Random Topics:
So or SuchPast Perfect or Past Perfect ContinuousDemonstrative Pronouns and Verb TensesConditional Sentences Type 0, 1 and 2Simple present/ past/ future tenseUnreal ConditionalsQuestion TagsSo, Such, Many, MuchModals and VocabularyPast Perfect and Past Perfect Continuous TenseOther quiz:
Conditional Sentences › ViewHad I studied harder, I________better in the last exam.
A. would do
B. would have done
C. had done
D. wouldn’t have done
Grammar › View
I … to her yesterday.
A. speak
B. spoken
C. spoke
D. speaking
