—Could I play computer games for a while, Mum? I’ve finished all my homework. —Oh, dear, if you _____.
#87248
A
can
B
dare
C
should
D
must
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—I visited China year. —That          interesting.
#87263
A
should have been
B
can be
C
must be
D
must have been
 If we ______ day before yesterday, we would have done the job.
#86719
A
hadn't been interrupted
B
weren't being interrupted
C
wouldn't be interrupted
D
weren't interrupted
Teachers required that all the students ___ their homework all alone.     
#87338
A
must finish
B
would finish
C
had to finish
D
finish
He _______ Shanghai, for I saw him talking with the headmaster a moment ago.
#90144
A
must have gone to
B
can’t have gone to
C
mustn’t have been to
D
can’t have been to