-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

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