[ Present Perfect Simple & Present Perfect Continuous ]
Animal conservation ___ more important in the last 100 years
A. became
B. has become
Random Topics:
Grammar TOEFLGrammar - used toVerb Tense, Pronouns and AntecedentsAlong & AgainstWish - beginnerPossessive Adjectives and Possessive PronounsVerb PhrasesPresent simple, Present continuous, Singular, PluralGrammar Like & Linking VerbDeterminers & QuantifiersOther quiz:
Grammar › ViewMother has bought some butter and flour. She _____ a cake this afternoon.
A. bakes
B. is baking
C. has baked
D. will have baked
Conjunctions › View
They planned a trip to the mountains, ___ they had to cancel it due to the weather.
A. and
B. but
C. also
D. so
E. however
Communicative Grammar › ViewThey shut down the factory because so many people ——– of dangerous smoke.
A. died
B. were dying
C. are dying
D. had died
Grammar › View
If you were him, you ______ it.
A. would not do
B. wouldn’t have done
C. will not do
D. do