1.May we leave the classroom now?

问题描述:

1.May we leave the classroom now?
No,you_____.You shouldn't leave until the bell rings
A mustn't Bwon't Ccan't

用C.上句的意思是我们现在可以离开教室了吗?
下面的回答: A是你们没有必要, B是你们不会, C是你们不能. 后面接的句子意思是:你们应该等到下课铃响了才能离开.