暑假练习-Unit 8
一、词形变化
A 根据句意和汉语注释，写出单词的正确形式：
1. It's a good idea to __________ (分开) waste into different groups.【出处：名师】
2. Humans depend on __________ (自然的) energy. So everyone should save it.
3. With the __________ (发展) of science, out life is becoming better and better.
4. Of the four problems, I think the fourth one is the __________ (简单的).www.21-cn-jy.com
5. It's a bad manner to throw the rubbish __________ (粗心地).【来源：21·世纪·教育·网】
B 根据句意，用括号内所给单词的适当形式填空：
6. Look, the gardeners are busy __________ (dig) in the garden.【来源：21cnj*y.co*m】
7. We can make our air cleaner by __________ (ride) bicycles.
8. It is time for us to take action to make a __________ (different).名师原创作品
9. Children grow well under the __________ (protect) of their parents.
10. There is more and more __________ (pollute) in the world now. We must do something.

二、选择：
11. What do you think he is going to ______ about the horror TV play?
A. tell   B. talk   C. speak   D. say.com
12. In winter, people usual