问题补充：
四．动词的适当形式填空
open the floor, have a lasting effect on, cut back on, think of…as, flow into, what if, wipe out, take responsibility for, result in, in the form of, under way, focus on, rely on
1.The pollution unsafe drinking water which has led to health problems for people living near the river.
2.Pollution is very bad for the people who the river for water.
3.Two special government projects are also to protect the river.
4.The projects problems along the Yangtze River such as water conservation.
5.There’s also another resource in the fight against desertification, the China National Desertification Monitoring Centre.
6. we run out of space?
7.People should not buying certain kinds of fish, because there are not many left in the ocean.
8.Now we for discussion.
9.Many types of waste our water.
10.In addition, many sea creatures by fishing boats.
11.These boats catch large numbers of fish without giving them time to lay eggs. This the number of fish left for us to eat.
12.My suggestion is that we should try to production and reduce the amount of things we make and buy.
13.The people running these factories are very concerned about the environment. We need to stop companies and money the enemy.1. has resulted in 2. rely on 3. under way 4. focus on 5. in the form of 6. What if 7. take responsibility for 8. will open the floor 9. flow into 10. are being wiped out
答案：
(答案→)1. has resulted in 2. rely on 3. under way 4. focus on 5. in the form of 6. What if 7. take responsibility for 8. will open the floor 9. flow into 10. are being wiped out
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