问题

Look! A book is on the floor. Whose is it—It ______ be Rick’s. It has his name on it.

A: mustn’t
B:can’t
C:must
D:need

正确答案是：

同类题型

Could you turn the TV down a little bit —________. Is it disturbing you

With everything ________，it is time that we _______ our meeting .

I will give the message to him __________hecomes back.

下列各句中，没有语病的一句是

After that, he knew he could ______ any emergency by doing what he could to the best of his ability.