4. 爷爷正在吸烟。Grandpa is _____

3. 他们正在读书。They are _____ books.

2. Nick 正在爬攀登架。Nick is _____ the jungle gym.

1. 你要去哪儿啊？ Where are you _____?

15. She is _____(shop, shopping).

14. The fish is _____(swim, swimming)in the river.

13. Uncle Jerry is _____(drive, driving).

12. My mother and my father are _____(dance, dancing).

11. Look, the baby is _____(smile, smiling).

10. The cat is _____(eat, eating)now.