完形填空（共20题，每小题1分）
阅读下面一段文章，从A 、B、 C、 D 四个选项中选出最佳选项。
Water costs money.  In some places water is hard  36  . what  37  when a town has these problems ?  A small town in California found a happy  38  .
Very  39  rain ever fell there.  The town had no water  40 .  The water it used was
41  from a river 300 miles away.  As more people  42  live in the town,  43  water was needed.  Now water  44  to be brought in from 600 miles ways.  All these cost  45  money.
The town  46  a plan.  It found  47  to clean its “dirty” water.  Once the cleaned water was reused  48  many ways.  Five  49  lakes was built.  Here people could swim and fish and go  50 .  They  51  have picnics in their new parks.  Farmers had more water
52  their crops.  New factories can be built, now that they have the promise of  53 .
In most places, water is used and thrown  54 .  The town that saved  55  water has saved the town!
36. A. supplying            B. getting                        C. to get                       D. to supply
37. A. happens                 B. happening           C. is happened                 D. happened
38. A. key                    B. answer                        C. answering             D. way
39.   A. little                 B. a little                  C. few                          D. a few
40. A. of itself                 B. of its own                 C. for its own           D. for itself
41. A. fetch                  B. take                         C. brought in            D. guided
42. A. come to                 B. came to                    C. coming to                 D. came for
43. A. many                  B. plenty of                  C. more                        D. many more
44. A. has                    B. had                          C. must                        D. needed
45.   A. many                B. a few                       C. a great many             D. a lot of
46. A. put                        B. made                       C. supply                  D. noticed
47.   A. a way           B. ways                        C. an answer                 D. a key
48. A. for                        B. by                           C. at                               D. in
49. A. man-making     B. man-make            C. man-made            D. man made
50.A. boating            B. to boat                    C. to boating                 D. on boating
51. A. must                   B. could                       C. needed                        D. had to
52. A. as                   B. with                         C. for                           D. to
53. A. water enough      B. enough water            C. crops enough            D. enough crops
54. A. off                        B. of                            C. away                        D. out of
55. A. it’s                        B. its                            C. one’s                   D. his