--Can I take the magazines out --No,sir.They __ out of the reading-room.It's a rule.A.needn't be taken B.can't take C.mustn't be taken

问题描述:

--Can I take the magazines out --No,sir.They __ out of the reading-room.It's a rule.
A.needn't be taken B.can't take C.mustn't be taken

C
A need跟to
B 无被动