匡

例句：

1. 3. 用
   工具
2. 1. He always helps me with my homework.
   他总是帮我做作业。
3. 2. The teacher supervised the students during the exams.
   老师在考试期间监督学生。
4. 3. We need to correct the mistakes in our report.
   我们需要在我们的报告中更正错误。