Is this a book?

这是一本书吗？

Oh, yes, they are.

哦，对，是我的。

Is it behind her chair?

在她的椅子后面吗？

Yes, it's mine.

对，是我的。

Could you help me please, girls? I want to put these things in the car.

姑娘们，能帮帮我吗？我想把这些东西放到车里面。

What are you doing?

你在干什么？