[ Modal Verbs & Perfect Infinitive ]
. You _______ (see) a ghost! There’s no such thing.
A. can’t have seen
B. must have seen
C. should have seen
D. might have seen

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Mixed General Quiz › ViewThe Connecticut River forms ___ entire eastern border of Vermont.
a. a
b. an
c. the
d. none needed
Articles › View
That was ______ horrible mistake.
A. a
B. an
C. the
Grammar › ViewLarry’s family went to the zoo, _____ they didn’t enjoy it.
A. but
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Habitual and Continuous Tenses › View
We …. tennis at six today.
A. are going
B. are playing
C. play
D. playing
