Grammar Quiz
[ Grammar ]

A theory ——- only when a hypothesis ——- by consistent results from many observations or experiments.

A. may have been developed / was being supported

B. can be developed / has been supported

C. will be developed / was supported

D. has been developed / had been supported

E. had been developed / might have been supported

Select your answer:
A  B  C  D  E 


Random Topics:

Verb Moods and Vague PronounsPresent and Past TenseModals in the PastAdverb Clauses of TimeHomophonesGrammar SuffixesComparativesPossesive Pronouns and Modals of AbilityMain Idea and Sentence StructureAdverbial Phrases

Other quiz:

Vocabulary › View

Click on the word that means the same thing as devour.

A. embarrass

B. devote

C. produce

D. consume

Adverb of Frequency › View

I _____________ watch cartoon because I hate them. News shows are much better.

A. almost always

B. sometimes

C. never

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