I.根据汉语或首字母提示写出单词
1.The children________（挖）holes to plant trees in the garden yesterday.
2.These students become________（明智的）than they used to be after learning from their mistakes.
3.Some plastic bottles can be________（回收利用）into clothing.
4.−−Is Mary s________about going abroad?−Yes,she is.She has prepared for a long time.
5.When shopping,we can use cloth bags to r________the pollution.

Ⅰ. 1. dug 2. wiser 3. recycled 4. serious 5. reduce

II.用括号中所给单词的正确形式填空
1.People can do something good for our Earth by________（ride）bicycles.
2.To save water,we can take________（short）showers and use less water for tooth brushing.
3.Planting trees________（be）good for the environment because trees can reduce dust and clean the air.
4.It's clever of you________（change）your plan now or you'll find it hard to realize it.
5.−Will the meeting________（put）off until next week?
　−No.It will go on as planned.

Ⅱ. 1. riding 2. shorter 3. is 4. to change 5. be put

1.−Jack,remember________the door when________your bedroom.
−Don't worry.I'll keep it in mind.
A. closing；leaving B. to close；leave
C. closing；leave D. to close；leaving

D

2.−Have you thought about our neighbourhood?
　−Yeah.I think the environment________more beautiful if more trees________around.
A. will make；are planted
B. will be made；will be planted
C. will be made；are planted
D. is made；will be planted

C

3.−−I remember that here________a big area of farmland near the house.
　−Yes.It has turned into a forest because of the government policy.
A. used to have B. used to be
C. is used to having D. is used to be

B

4.−We can reuse paper and bottles.It can protect the environment.
　−________.It can save money too.
A. Take it easy B. Best wishes
C. I agree D. Not at all

C

IV.句子翻译
1.对我们来说尽快采取措施保护环境是明智的。
______________________________as soon as possible.
2.马路上太多的汽车导致严重的空气污染。
　Too many cars on the road__________________
3.他过去常常开车上班,但是现在他习惯乘坐地铁。
　He____________________________,but now he ______________________________.
4.我们被告知离开教室前关灯。
　We______________________________before we leave the classroom.
5.我们可以做些什么来减少水污染呢？
　What can we do__________________________?

Ⅳ. 1. It's wise for us to take action to protect the environment
2. cause/lead to serious air pollution
3. used to drive (a car) to work/go to work by car; is used to taking the underground
4. are told to turn off the lights
5. to reduce water pollution