问题

Listen ! Helen is singing in the next room.It ____ be Helen. She has gone to Beijing.

A:can’t
B:mustn’t
C:may
D:neen`t;

正确答案是：

同类题型

Why do you like the parrot__________ –Because it has ________ feathers.

___ the problem of land erosiongetting more serious, the government is searching for a way to deal with it

, I believe, and you will find the boy is very outgoing.

Readingprovides the mind only with materials of knowledge; it is thinking that makes________ we read ours

I did not give offence to you ___________—Forget it Let’s make up