Grammar Quiz

[ TOEFL Adjective and Adverb ]

Besides . . . critical for vision, vitamin A also supports immune function.

A. it is

B. to be

C. when is

D. being

Select your answer:
A  B  C  D  E 


Random Topics:

Phrasal Verb & Prepositional PhraseRelative Clauses and Past PerfectRelative Clauses PronounsModal PossibilitiesIdiom and TensesModals and AdviceTenses - Present and PastVerb ConjugationCan/CouldAdjective & Adverb

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