If you _____ leave early on weekdays, do it quietly. The other classmates are also dying to have an early leave.
#62977
A
can
B
must
C
should
D
may
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At last the boy was made      and began to laugh.
#77712
A
stop crying
B
to to stop to cry
C
to stop crying
D
stop to cry
I was really anxious about you. You _______ home without a word.
#63535
A
mustn’t leave
B
shouldn’t have left
C
couldn’t have left
D
needn’t leave