-May I go now?-No,you __.You __ stay here till 7:00o'clock.

问题描述:

-May I go now?-No,you __.You __ stay here till 7:00o'clock.
A.needn't;has to B.mustn't;may C.can't;must D.needn't;must

C
我可要走了么?
不,你不能.你必须在七点之前呆在这里