This is my pen, your pen is on the table, and their pens are in the pencil case.

这是我的钢笔，你的钢笔在桌子上，他们的钢笔在铅笔盒里。

youdao

This is my pen, your pen is on the table, and their pens are in the pencil case.

这是我的钢笔，你的钢笔在桌子上，他们的钢笔在铅笔盒里。

youdao