You __________ buy a gift, but you can if you want to.
#63027
A
must
B
mustn’t
C
have to
D
don’t have to
推荐题目
I told Sally how to get there, but perhaps I ________ for her.
#62969
A
had to write it out
B
must have written it out
C
should have written it out
D
need to have written it out
It's the library! So you_______ make any noise here.
#74892
A
mustn't
B
won't
C
need
D
may
---Excuse me, may I take the magazine away? ---No, you ______. You ______ only read it here.
#77395
A
mustn’t; can
B
mustn’t; need
C
may not; need
D
needn’t; can