For many years people have wondered ______ exists elsewhere in ...

[ Adverb and Noun Clauses ]

For many years people have wondered ______ exists elsewhere in the universe.

A. that life

B. life which

C. whether life

D. life as it

Select your answer:

Random Topics:
Present and Past Simple Passive Preposition (at,in,on)Simple Present and Present Continuous Definite and Indefinite Articles Adjective Clause and Adverb Clause Conjunctive Adverbs Have Got Preposition and Adjective Must / must not

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