欧美日韩黄网欧美日韩日B片|二区无码视频网站|欧美AAAA小视频|久久99爱视频播放|日本久久成人免费视频|性交黄色毛片特黄色性交毛片|91久久伊人日韩插穴|国产三级A片电影网站|亚州无码成人激情视频|国产又黄又粗又猛又爽的

2. 選擇公共交通對人們來說是很明智的。

四、完成句子

1. 我們該做些什么來節(jié)省能源？

8. The school hall is so clean. Who (clean) it just now?

7. As soon as the work (do) tomorrow,they'll go for a holiday.

6. — How can we reduce air pollution?

  —By (ride) bicycles.

5. Is it useful for everyone (protect) the environment?

4. Planting trees (be) good for the environment.

3. the school sports meeting (hold) next Friday?

三、動詞填空

1. I (phone) you if I get the news first.

2. Nothing (offer) to them at first,so they didn't know how to start.

() 6. Remember the magazine to Sandy after it.

   A. to return;reading   B. returning;reading

   C. to return;read   D. returning;reads