--Can I tell my best friend about it? ---No. I don’t want anyone else to know. You _________ let it out. 
#88317
A
mustn’t
B
won’t
C
don’t have to
D
don’t need to
推荐题目
It is very important that you _______ for this examination.
#87091
A
would get yourself prepared
B
must get yourself preparing
C
should get yourself prepare
D
could get yourself prepared
 It is required in our school that lights in students’ rooms ______ off by 11o’clock.
#87254
A
be switched
B
would switch
C
should switch
D
must be switched