根据句中所给汉语，完成下列句子。（每空一词，每空0.5分，共10分）

1.我们必须找到方法以阻止有毒气体污染空气.

Ways must be found to ________ poisonous gas ________ ________ _________.

2.这对夫妇靠微薄的收入养大了孩子，现在轮到他们的孩子来照顾年迈的父母了。

The couple brought up their children on a small income. Now _______ _______ _______

________, they should look after their elder parents.

3.火星上有没有生命还不确定。

_______ is uncertain ________ ________ ________ life on Mars.

4.既然你已经拿到了驾照，为什么不自己开车呢?

_______ _____ you have got your license, _______ ______ drive the car yourself?

5.我正在街上徘徊，这时我突然看见了一家裁缝店。

I was wandering through the street ________ I _________ ________ ________ a tailor’s shop.

短文改错（共10小题；每小题1分，满分10分）

增加:在缺词处加一个漏词符号(^),并在此符号下面写出该加的词.

删除:把多余的词用斜线(\)划掉.

修改：在错的词下划一横线，并在该词下面写出修改后的词。

注意：1.每处错误及其修改均仅限一词。

      2.只允许修改10处，多者（从第十一处起）不计分。

      3.必须按答题要求做题，否则不给分。

Dear manager,

I am writing to tell you something that happened on me in your department store the other day . I came there to buy a shirt. I chose one and paid it. However, when I got to home with it, I found the front part and the back were of different colour. At once I went back to your store and hoping that I could have it change. Unlucky, the shop assistant refused to do that for me. She said that I must have chosen it more carefully. Now that I can only do is to write you for help. I believe you will try your best to settle the problem.

                                                       Jefferson

短文改错（共10小题；每小题1分，满分10分）
增加:在缺词处加一个漏词符号(^),并在此符号下面写出该加的词.
删除:把多余的词用斜线(\)划掉.
修改：在错的词下划一横线，并在该词下面写出修改后的词。
注意：1.每处错误及其修改均仅限一词。
2.只允许修改10处，多者（从第十一处起）不计分。
3.必须按答题要求做题，否则不给分。
Dear manager,
I am writing to tell you something that happened on me in your department store the other day . I came there to buy a shirt. I chose one and paid it. However, when I got to home with it, I found the front part and the back were of different colour. At once I went back to your store and hoping that I could have it change. Unlucky, the shop assistant refused to do that for me. She said that I must have chosen it more carefully. Now that I can only do is to write you for help. I believe you will try your best to settle the problem.
Jefferson