—Can we leave the classroom now?—No, you _________. You _________ to leave until the bell rings.
#74081
A
don’t have to; are supposed
B
mustn’t; are allowed
C
needn’t; aren’t allowed
D
can’t; aren’t supposed
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–Whose shirt is this?--It _______ be Li Lei’s. It is too big for him.
#78243
A
could
B
must
C
can’t
D
might
Susan’s parents have bought a large house with a swimming-pool. It ____ be very expensive.
#76802
A
must
B
can
C
mustn’t
D
can’t
We ______ the difficulty together, but why didn't you tell me?
#63504
A
should face
B
might face
C
could have faced
D
must have faced