1. The books on traveling are especially popular with young people. 2. Although you are very busy, you should not leave your child alone playing computer games at home. 3. Once you have got a bad habit, it is hard to get rid of it. 4. The students volunteered to raise money to help the poor in developing countries. 5. What is worse, he has made not only one, but dozens of spelling mistakes.
1。旅行的书特别受年轻人欢迎。2。虽然你很忙，你不应该让你的孩子独自在家玩电脑游戏。3。一旦你养成了坏习惯，就很难改掉它。4。学生自愿筹集资金帮助发展中国家的穷人。5。更糟的是，他不但犯了一个错误，而且还犯了许多拼写错误。