[ Perfect Tenses ]
Which auxiliary verbs are used to form the future perfect tense?
A. is, are
B. was, were
C. will have, shall have
D. has, have
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Grammar › ViewThe waste of the factory the river.
A. Pollutes
B. Dirties
C. Wastes
D. Extinct
Tenses › View
The dog ______ (bark) loudly right now.
A. is barking
B. barks
C. are barking
D. barking