She is a quiet girl at school,but sometimes she _____ be very naughty.
#62247
A
should
B
would
C
will
D
can
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He ______ it on schedule, but somehow he fell behind.
#62908
A
must have done
B
might finish
C
could have finished
D
could finish
---Must I do the work today? ---No, you _______. You may do it tomorrow.
#78312
A
can’t
B
mustn’t
C
shouldn’t
D
needn’t