[ TOEFL ]
Researchers have long debated _____________ Saturn’s moon Titan contains hydrocarbon oceans and lakes.
A. over it
B. whether it
C. whether
D. whetherover
Select your answer:
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Grammar - Collective NounsModals of ProbabilityQuantifiers and ArticlesGrammar (want to/ need to/ have to)Subject/Verb Agreement with Collective NounsPast Continuous Tense & Past ModalsSentence CompletionRequest with Modal VerbsGrammar ModalsPreposition FormOther quiz:
Perfect Tenses › View________ to drive in the snow?
A. Have you ever been trying
B. Have you ever tried
Grammar › View
Her constant interruptions during the meeting were _____ to the smooth flow of the discussion.
A. conducive
B. detrimental
C. salutary
D. expedient