[ Present Perfect Tense ]
Yunita and Martha …… in library for two hours.
A. have been
B. been
C. has been
D. are
Select your answer:

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Bare Infinitive and To Infinitive › ViewWhich verb is not followed by a full infinitive?
A. deny
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If you call Rob now, he _____ finished eating dinner.
A. ‘ll have
B. must have
C. can’t have
