问题描述：
——Look,the light in the teacher's office is still on.Miss Li is working there.
——Look,the light in the teacher's office is still on.Miss Li is working there.
——It________ be Miss Li.She's gone to England for a short visit.
A.can't B.mustn't C.needn't D.may not
——Look,the light in the teacher's office is still on.Miss Li is working there.
——It________ be Miss Li.She's gone to England for a short visit.
A.can't B.mustn't C.needn't D.may not
问题解答：
我来补答展开全文阅读