5. China ____________ another man-made satellite into space next year .

4. We have done something ____________ polluting the environment .

3. The teacher told the students _____________ their compositions the next day .

2. We　 have ______ many places of interest since we came to China .

(　 travel to　 look　　　　　　 find out 　　　 　laugh at　　　 hand in　　　　　　　 　 send up 　 　prevent )

1. When the teacher came in , all the students ______　 his strange hair .

10.The l_______ turn green when spring comes .

9. It is raining heavily these days , maybe there will be a f_____ .

8. The woman walked quickly t_______ the doctor’s door .

7. Make sure the door is s______ down when you leave the room .

6. Please c_______ the mistakes as quickly as you can .