用所给单词的适当形式填空。

1. He is very tired, but he doesn't stop ________ (work).

2. He always ________ (wear) glasses.

3. He likes reading and ________ (write).

4. How many _________ (subject) do you study at school?

5. Look at those boys ________ (play) football over there.

6. Are you ________ (make) a kite for me?

7. She likes to go ________ (shop) on Sunday.

8. Three ________ (child) are having lunch

9. — Where is Bill?

    — He ________ (take) photos in the garden.

10. They ________ (be) students. They want ________ (be) doctors.