to do very great damage to land

例句：

1. 1. To do well in thisexam is crucial for our future.
   在这次考试中表现好对我们未来至关重要。
2. 2. The teacherasked us to do the homework before class.
   老师要求我们在课前完成作业。
3. 3. We needto do more research to find a solutionto the problem.
   我们需要做更多的研究来解决这个问题。