A group of fifteen-year-olds at Sunshine School are holding a charity sale to raise money to help their classmate Lisa. Lisa had cerebral palsy(大脑性瘫痪）when she was a baby. Although Lisa has to use a wheelchair to help her get around, she never gives up. And she is always ready to help others. 、

    Lisa has the chance of standing up, but she needs an operation(手术）which will cost lots of money." Lisa's doctor said.

    "I never thought that I could stand up one day. Actually the news is surprising for me. However, when I see my parents are worried about the cost of the operation, I am sad. I am used to my life. I don't mind even if I can't stand up," Lisa said, "Now ray classmates and some other kind people are helping me. I am really thankful. If I stood up one day, I would try my best to help more people."

    "While helping Lisa, we can also learn a lot. We have learned how to cook cookies and how to sell them," Betty, one of Lisa's classmates said. "Now we know making money is not easy, so we won't waste money anymore."

    Alex, a boy in Lisa's class, told a reporter that they could raise about $100 every day. "We have raised about $2,100 so far. We hope we will raise more money for Lisa's operation," said he.

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【小题1】无论我们遇到什么困难，我们都应该试着笑对人生。
No matter what trouble we have，we should always try to________________.
【小题2】如果你想要成功，你得不断尝试，绝不放弃。
If you want to succeed，you should keep on trying and never _______________.
【小题3】他的电脑比我的便宜得多。
His computer is                 mine.
【小题4】直到现在，三聚氰胺仍然在一些食品中被发现，所以我们应该选定适合的方式来避免。
Up till now, Melamine has still been found in some food, so we must  _____________suitable ways to prevent it .
【小题5】在你上交试卷之前，你最好再次仔细检查。
Before you hand in your examination papers, you had better ___________ again.