1、He appears to have caught a cold. 他似乎感冒了。2、Her job is to clean the hall. 她的工作是打扫大厅。3、I have no choice but to stay here. 我只能留在这里，别无选择。

1、To finish the work in ten minutes is very hard. 十分钟之内完成这项工作是很难的。
2、Marx found it important to study the situation in Russia. 马克思发现研究俄国的情况是很重要的。
3、He did nothing last Sunday but repair his bike. 他上周日除了修他的自行车什么也没干。
4、He gave us some advice on how to learn English. 他给了我们一些学英语的建议。
5、With a lot of work to do, he didn't go to the cinema. 他有很多工作要做，所以没去电影院。