—Why don’t you wear your jogging shorts, mum?—Well, my legs are too skinny, if you ______ know. 
#62955
A
must
B
can
C
may
D
need
推荐题目
You ________ in person; a telephone would have been enough.
#62596
A
couldn’t have come
B
needn’t have come
C
shouldn’t have come
D
mustn’t have come
—Must I finish the work today?—No, you    .
#75882
A
can’t
B
mustn’t
C
needn’t
D
don’t