[ Tenses ]
For decades, researchers _____ to wrest predictions from string theory, the leading candidate for a more fundamental understanding of the universe.
A. tried
B. were trying
C. have tried
D. try
E. had tried
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Tenses & AffixesAntonymsDeterminers & QuantifiersOpinion / Agreement-ing form and the to-infinitiveAdjective / Noun + to InfinitiveAdjective, Adverb, and Noun FormsPast or Present Verb TenseModals AuxiliaryPresent Continuous for FutureOther quiz:
Grammar and Vocabulary › View. He never lies. He is very _______.
A. dishonest
B. funny
C. lazy
D. honest
Vocabulary › View
……………….. wisdom says that most people will get married and have children.
A. Conservation
B. Conventional
C. Conventing
Tenses › ViewHe __________ the football match every weekend.
A. watch
B. watches
C. watched
D. watching
Run-On Sentences › View
Run-On Sentence or Correct: Meet me at the courts we can play for an hour before dark.
A. Run-On
B. Correct