[ Grammar ]
I don’t know why he is late. He ________ be stuck in traffic.
A. must
B. might
C. can’t
D. couldn’t
Select your answer:
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Modal Verbs › ViewDon’t leave your window open at night. Someone ________ climb in.
A. might
B. can’t
C. couldn’t
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She sent me _____ postcard from Italy.
A. a
B. an
C. the
D. –