Unit 2 I’ll help to clean up the city parks.

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第一课时 (Section A 1a—2d)
◢ 知识巩固 ◣
I 根据汉语提示及句意填写单词。
1. We saw a(n) ________ (标志), which says “No parking”. So we couldn’t park the car here.
2. He often ________ (自愿) to teach the children.
3. Look! There are some ________ (通告) on the wall.
4. I don’t feel ________ (寂寞的) because I have made new friends here.
5. We all ________ (欢呼) as the team came on to the playground.
Ⅱ 用方框中所给短语的适当形式填空。(剩余16416字)