问题

Shall I get one more cake fro you, David?— Thanks, but you ______. I’ve had enough.

A:shouldn’t
B:mustn’t
C:can’t
D:needn’t

正确答案是：

同类题型

The Russian rocket designer has diedFor many years, he ______ as an important assistant to the father of Soviet space program

What do you think of your boss—He always work hard and he is ____________ late forwork.

下列各项中加点虚词意义用法相同的一组（）

_____ great your idea is!

When ________ about one of the biggest problems today, many people say that an energy crisis is approaching and is threatening mankind’s survival[ ]