—Hurry up, Mum. The lights are turned on. Dad has been back.—It _________ be him. He has gone to Shanghai.
#75758
A
must
B
can’t
C
mustn’t
D
may
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The door ________ open, no matter how hard she pushed. 
#62946
A
shouldn’t
B
couldn’t
C
wouldn’t
D
mightn’t
-Sorry, Miss Liu. I forgot __________ my homework to school. -__________ so careless, Sandy.
#77091
A
to bring; Don’t be
B
to bring; Not be
C
bringing; Don’t be
D
bringing; Not be
You____Tom at the party yesterday;he went abroad for a holiday last week.
#63294
A
should have seen
B
might have seen
C
mustn’t have seen
D
couldn’t have seen