1 . If there is nothing more to do, we ________ as well go to bed.

A．should

B．can

C．would

D．may

2 . ________ you make so much noise, Jimmy? Your little sister is still sleeping.

A．Can’t

B．Must

C．May

D．Won’t

3 . Mary told me that her daughter _______walk when she was nine months old.

A．should

B．could

C．would

D．might

4 . If you think the price of beef is too high，you ________________buy some pork.It depends on you.
如果你认为牛肉太贵的话，你不妨买些猪肉。你自己决定。

5 . 重要的是，你可以避免一些不必要的伤害，这通常发生在其他运动中，你所需要的可能只是一双运动鞋。（汉译英）

6 . The designer has tried every possible way to make the robot light, so you_______worry about its weight.

A．must

B．may

C．can't

D．needn't

7 . — Could I call you by your first name?
— Yes, you ______.

A．will

B．need

C．may

D．must