1.(　　 ) He looks sad. Let’s cheer him ______.

　　　　 A. up　　　　　　 B. in　　　　　　　 C. out　　　　　　 D. at

10. I used to help my math teacher ____________ the test papers when I was a high school student.

9. They were busy ____________ sings to help the blind people.

8. The little girl ____________ her father. They are both clever and a bit quiet.

7. The twins are ____________ each other in many ways.

6. Don’t ____________ what you should do today till tomorrow.

5. He has ____________ all the broken clocks.

4. We must ____________ the apartment because grandma is coming next week.

3. I ____________ some of my clothes because they were too small for me.

2. The school has ___________ a plan to cut down the cost.