Don't forget to print airmail on the letter.

不要忘记在信封上印上航空邮件

How's your niece?

你的侄儿好吗？

I got my car washed.

我洗好了车。

I remember the girl whose father owns a stationery store.

我记得那个女孩的父亲有一家礼品店。

I'm going to tell him what to answer.

我正要告诉他应该如何回答。

Thank you for showing me the way.

谢谢你告诉我怎么走。