[ Present Perfect Simple & Present Perfect Continuous ]
Animal conservation ___ more important in the last 100 years
A. became
B. has become
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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:
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