[ 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
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 PhrasesOther quiz:
Homonyms › ViewAn important spice is made from ___ seeds.
a. fennel
b. phenol
Homophones › View
Her polka-dot dress is a __________ to her blue shoes.
A. Complement
B. Compliment
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