题目内容：

——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

优质解答

A can't不可能 mustn't禁止 needn‘t不需要 may mot也许不