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He __________ be at home now because I saw him in the office just now.
#76885
A
can’t
B
mustn’t
C
may
D
must
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You ______ wear sports shoes when you climb a mountain.
#77969
A
can’t
B
shouldn’t
C
mustn’t
D
have to
He ________ to swim when he was five.
#78264
A
can
B
could
C
can be able
D
was able
You are tired. You _____ go to bed early.
#77293
A
can’t
B
should
C
aren’t
D
shouldn’t
—Look at the boy running on the ground. Is it Davis?—It ______ be him. I saw him go to the teacher’s office just now.
#74465
A
mustn’t
B
can’t
C
could
D
might
 ---Are you pleased with the result of the math exam?  ---Not at all. I can’t have ______ one.
#75040
A
a worse
B
a better
C
the best
D
the worst