1 . 你能遵守它们（决定）吗?
Were you ________ ________ keep them?

2 . The boy is only five years old, but he __________   play the violin well.

A．could

B．must

C．need

D．is able to

3 . —________ you play the piano at the age 8?
—Yes, I could. I believe I will ________ play it better in the future.

A．Can；be able to

B．Could；be able to

C．Were able to；could

D．Could；Could

4 . Sorry, I ________ go shopping with you yesterday afternoon. Because I was too busy.

A．could

B．couldn’t

C．am able to

D．couldn’t able to

5 . She could play the piano when she was five years old.（改为同义句）
She ________ ________ ________ play the piano at the age of five.

6 . I think he ________ finish doing the work on time.

A．will be

B．will can

C．will be able to

D．able to

7 . Finish your homework first, then you’ll _______ surf the Internet for half an hour.

A．can

B．need

C．be able to

8 . 一Are you able to_________(paint)the whole building，Ann?
一No．I need your help!

9 . If you ______ able to come, I will show you around my school.

A．can be

B．will be

C．will can

D．are

10 . 机器人无法做到我们能做的事情。
Robots will ________ ________ ________ ________ do the same things as we can do.