题目内容
19．-There are too many cars in our city，we should drive less for fresh air．-You're right，everyoneshould play a part in protecting environment．（人人都应该尽一份力保护环境）（part）
分析 ---我们城市有很多汽车，我们应该开少点，为了有新鲜的空气．
---对的．人人都应该尽一份力保护环境．
解答 答案：should play a part in protecting environment．结合句意是说客观事实用一般现在时，表示应该用should，后加动词原形，结合所给的part用play a part in在…方面起作用，保护环境protect environment，故答案：should play a part in protecting environment．
点评 play a part in：在…起作用，起到什么作用
play a role in：在…中起作用 例句说明：with the development of science and technology，computers have played an important part in our daily life．
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9．A little boy came up to his mother in the kitchen one evening while she was cooking supper，and （15）A her piece of paper that he had written something on．After his mother （16）C her hands，she read what was on the paper．
For （17）B the grass 5.00
For cleaning up my room this week 1.00
For going to the supermarket for you 1.00
For looking after my baby brother while you went shopping 1.00
For taking out the rubbish 1.00
For getting a good report card 5.00
For cleaning up the garden 2.00
Total：16.00
Well，his mother looked at him for a while，and then she picked up a pen，turned（18）C the paper he had written on，and this was what she wrote：
For the nine （19）C I carried you while you were growing inside me，free．
For all the nights that I've sat up with you，fed you and sung songs for you，free
For all the tears that you've （20）B through the years，free．
For all the nights that were filled with （21）D，free．
For the toys，food，clothes，and even cleaning your nose，free．
And when you add it all up，the（22）A cost of real love is free．
When the little boy finished reading what his mother had written，there were tears in his eyes．He looked straight （23）D at his mother and said，"I'm sure do love you．"And then he took the pen and in great big letters he wrote：（24）A IN FULL．
For （17）B the grass 5.00
For cleaning up my room this week 1.00
For going to the supermarket for you 1.00
For looking after my baby brother while you went shopping 1.00
For taking out the rubbish 1.00
For getting a good report card 5.00
For cleaning up the garden 2.00
Total：16.00
Well，his mother looked at him for a while，and then she picked up a pen，turned（18）C the paper he had written on，and this was what she wrote：
For the nine （19）C I carried you while you were growing inside me，free．
For all the nights that I've sat up with you，fed you and sung songs for you，free
For all the tears that you've （20）B through the years，free．
For all the nights that were filled with （21）D，free．
For the toys，food，clothes，and even cleaning your nose，free．
And when you add it all up，the（22）A cost of real love is free．
When the little boy finished reading what his mother had written，there were tears in his eyes．He looked straight （23）D at his mother and said，"I'm sure do love you．"And then he took the pen and in great big letters he wrote：（24）A IN FULL．
| 15．A．passed | B．posted | C．offered | D．borrowed |
| 16．A．waved | B．clapped | C．dried | D．shook |
| 17．A．pushing | B．cutting | C．mopping | D．picking |
| 18．A．back | B．away | C．over | D．off |
| 19．A．days | B．weeks | C．months | D．years |
| 20．A．enjoyed | B．caused | C．collected | D．proved |
| 21．A．jokes | B．wishes | C．smiles | D．worries |
| 22．A．full | B．half | C．high | D．new |
| 23．A．out | B．around | C．down | D．up |
| 24．A．PAID | B．SOLD | C．SPENT | D．BOUGHT |
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