[ TOEFL Adjective and Adverb ]
Virtually . . . cells in the human body contain DNA in their nuclei.
A. they are all
B. all are
C. all
D. they all
Select your answer:
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Prepositions › ViewThe flight to London was postponed because ______ the bad weather.
A. at
B. of
C. on
D. for
Subject Verb Agreement › View
John, together with his wife and two children, (is / are) going to dinner.
A. is
B. are