问题

Look at the boy playing basketball on the ground. Isit George?— It ________ be him. He told me he would playbasketball after class, but he’s not sure.

A: mustn’t
B:must
C:can’t
D:may

正确答案是：

同类题型

There were __________ animals in the forestmany years ago.

So _______________ at the sight of the monster that he could neither move nor scream.

Chinese culture stands for the culture in the east. It is different from that in the ______.

_________I went to the US,I visited manycities.

I don’t care ____ or not you like the plan.