题目内容
4. 空气污染是世界最大的问题之一。
4. Air pollution is one of the biggest problems in the world.
2. 我们有很多法律来限制空气和水污染。
8. The teacher will ask us a lot of questions in class.
二、完成句子
1. 你介意在刷牙时关掉水龙头吗？
2. Who (invite) to the charity show next week?
9. Laura just (write) a very good article about water pollution.
2. Cars will not only (污染) the air in cities,but also make the street crowded
9. The trees will grow well in rich (土壤) .
8. —Millie,would you please off the radio?
—Sure. I didn't notice it was on.
活力课时同步练习册系列答案活力课时同步练习册系列答案活力课时同步练习册系列答案