(   ) 1. ―How many birds can you see in the tree?

--      

A. No one. B. None.

C. Anything. D. Nothing.

 从方框中选出合适的短语并用其适当形式填空。

care for,break the rules, do one's best,walk on，in public

1. When you have a difficulty，you should      to deal with it.

2. I think we should       wild  animals, because they are our friends.

3. Kate，don't speak loudly      

4. You will be punished if you      

5. Parents should tell their children not to      grass.

(   ) 1. What should we do to protect our environment? 

(   ) 2. What are they talking about?

(   ) 3. What causes you to cough so badly? 

(   ) 4. His leg was hurt in a traffic accident.

(   ) 5. Everyone should care for animals and plant more trees.

n

A.  I'm sorry to hear that.

B.  The smoke from the chemical factory.

C.  We should do everything to protect it.

D.  They are talking about the environment.

E.   That's right.

5. 有些森林巳经变成了农田。

Some forests                   farm land.

4. 他学习不努力，结果没通过考试。

He didn't study hard                     ，he failed the exam.

3. 大量在外地工作的人春节期间不能 回家。

______  _______  _______  _______  people working in other cities can't go home during the Spring Festival.

2. 他巳经逐渐明白保护环境的重要性了。
He             the importance of protecting the environment.

1. 尽管在下大雨,他们仍然坚持在外劳作。

       it was raining heavily，they           kept working outside.

 从方框中选出合适的短语并用其适当形式填空。

cut down，come into being，die out， blow away, wash away

1. People destroyed the living conditions of animals. So some animals on the earth are      completely.

2. Trees can stop the wind from       the earth.

3. Heavy rain will       the soil soon if there are no trees.

4. A new rule will soon       to solve the problem.

5. We should plant more trees after we       some      

5. They tried to stop the ship from       (go) down.