题目内容：

用所给动词的正确形式填空

1.Please tell them __________ (not throw) the paper away. They can use it again.

2.When I came in, I saw a purse __________(lie) on the floor.

3. --- I called you just now, but you didn’t answer.

--- Sorry, I ___________ (discuss) with my sister about homework.

4.The small village _________ ( turn) into a modern town in the past ten years.

5.I often hear her ________ (sing) in the next room.

6.There ___________ (be) a talk show on CCTV-4 at nine this evening, isn’t there?

7.The children __________ (enjoy) themselves in the park at the moment.

8.My cousin’s lovely cat __________ (die) two days ago.

9.He with his classmates ___________ (exercise) every morning.

10.I’m sorry I _______ (keep) you waiting for such a long time.