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:
Grammar › ViewWhat change, if any, should be made to the following sentence?
The cats loves rolling around in the grass.
A. Change cats to Cat
B. Change loves to love
C. Insert a comma after cat
D. No change needed
Grammar › View
What is the correct spelling of snap + ing
A. snapped
B. snapeing
C. snaping
D. snapping
Vocabulary › ViewClick 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