A theory ------- only when a hypothesis ------- by consistent ...

[ 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 Pronouns Present and Past Tense Modals in the Past Adverb Clauses of Time Homophones Grammar Suffixes Comparatives Possesive Pronouns and Modals of Ability Main Idea and Sentence Structure Adverbial Phrases

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Nguyen Du ……………. many good works when he was alive.

A. used to write

B. gets used to writing

C. got used to write

D. used to writing

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When we write the past tense of the verb “cry,” is it regular or irregular? Hint–think of what we normally do to make most verbs turn into past tense.

A. irregular

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

A. embarrass

B. devote

C. produce

D. consume

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

A. almost always

B. sometimes

C. never