[ Perfect Tenses of Verbs ]
Elizabeth has spent the past three hours in the library.
A. present perfect
B. past perfect
C. future perfect
Select your answer:
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Grammar › ViewThere aren’t _____vegetarians in the office, so let’s order hamburgers for everybody!
A. a
B. any
C. some
D. a lot of
Grammar › View
Most of the shoes … made of rubber.
A. is made of
B. are made of
C. was made of