[ 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 › ViewChoose the proper noun.
A. October
B. shop
C. library
Grammar › View
The teacher encouraged her students with a motivating speech, and they excelled in the science fair against more experienced competitors.
What is the conjunction used in the sentence?
A. and
B. with
C. against
D. so
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