Thank you, Lily.

谢谢你，莉莉。

The eraser goes from one student to another first one way, then another.

橡皮擦从一个学生传给另一个学生－先从这个方向传过去，然后返回来。

I went home at half past five.

我5：30回家的。

Did you buy one, sir?

你买了票吗，先生？

Ann ran to the door, and found Li Lei outside.

安跑到门口，看见李磊在门外。

I have no idea.

我不知道。