用所给动词的适当形式填空。

1. He is going to ______ (watch)  TV this Sunday.

2. Why don't  you ______ ( go) to movies?

3. We should ______ (study)  hard.

4. It's a good idea ______ (read ) English in the morning.

5. How about ______ (play)   football  this  afternoon?

6.—What aer they doing?

   —They ______ (listen) ot music.

7. Can you  ______ (help )   me with my English?

8. How often  write the correct ______ (spell )next to the mistakes.

在人体内与供能无关的是（　　）

A．糖类

B．脂肪

C．蛋白质

D．核酸