题目内容：

Water costs money. In some places water is hard 31. What 32 when a town has these problems? A small town in California found a happy 33.

　　Very 34 rain ever fell there. The town had no water 35. The water it used was 36 from a river 300 miles away. As more people 37 live in the town, 38 water was needed. Now water 39 to be brought in from 600 miles away. All these cost 40 money.

　　The town 41 a plan. It found 42 to clean its “dirty” water. Once the cleaned water was reused 43 many ways. Five 44 lakes were built. Here people could swim and fish and go 45. They 46 have picnics in their new parks. Farmers had more water 47 their crops. New factories can be built, now that they have the promise of 48.

In most places, water is used and thrown 49. The town that saved 50 water has saved the town！

1.A. supplying	B. getting	C. to get	D. to supply
2.95 ha. happens	B. happening	C. is happened	D. happened
3.A. key	B. answer	C. answering	D. way
4.A. little	B. a little	C. few	D. a few
5.A. of it self	B. of its own	C. for its own	D. for itself
6.A. fetch	B. take	C. brought in	D. guided
7.A. come to	B. came to	C. coming to	D. came for
8.A. many	B. plenty of	C. more	D. many more
9.A. has	B. had	C. must	D. needed
10.A. many	B. a few	C. a great many	D. a lot of
11.A. put	B. made	C. supply	D. noticed
12.A. a way	B. ways	C. an answer	D. a key
13.A. for	B. by	C. at	D. in
14.A. man-making	B. man-make	C. man-made	D. manmade
15.A. boating	B. to boat	C. to boating	D. on boating
16.A. must	B. could	C. needed	D. had to
17.A. as	B. with	C. for	D. to
18.A. water enough	B. enough water	C. crops enough	D. enough crops
19.A. off	B. of	C. away	D. out of
20.A. it’s	B. its	C. one’s	D. his