Unit 13 We're tryingto save the earth!

第一课时 Section A （1a-2d）

I.根据首字母及句意补全单词。

1.You mustn't throw p bags away afteryouuse them.

2.Students from the middle school used 300 treestobuildaW house.

3.Thethreef put the fish into the boat.

4.The girl was afraid to speak in public because she thought she was u_

5.We should keep our classroom clean， so don't1 everywhere.

Ⅱ.根据汉语意思完成译句。（剩余13415字）