4. They _____ working now.

3. Children _____ playing in the playground.

2. The eagle _____ flying in the sky.

1. He _____ drinking water.

10. 我们在唱歌。We are _____ now.

9. 看！Cindy来了。Look, Cindy is ______.

8. 他正在写信。He is _____ a letter.

7. Jerry在喝柠檬果汁。 Jerry is _____ lemon juice.

6. 我妈妈正在做饭。 My mother is _____.

5. 我在做作业。I am _____ my homework.