— Mum, my friends are waiting for me outside. May I go out to play with them?— Yes, you        , but be careful, please.
#75783
A
shall
B
must
C
may
D
should
推荐题目
 Everyone ______ be polite to the old people.
#76484
A
may
B
should
C
can
D
could
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
---Must I finish my homework now ?  ---No, you ________
#74373
A
shouldn’t
B
mustn’t
C
needn’t
D
can’t
—_________ I take some photos in the hall, sir?  —No, you _________.
#74914
A
Can, needn't
B
Must, mustn't
C
Could, won't
D
May, mustn't