toatoa

例句：

1. 1. I don't know what to do next.
   我不知道下一步该怎么做。
2. 2. He was too tired to attend the meeting.
   他太累了，无法参加会议。
3. 3. The teacher asked us to finish our homework before class.
   老师要求我们在课前完成作业。