I have some math books. They are my best friends.

我有些数学书，它们是我最好的朋友。

youdao

Do you have any math books?

你有一些数学书吗？

youdao

She'd always buy me extra math books to do at home.

她总是给我买额外的数学书在家里做。

youdao

She'd always buy me extra math books to do at home.

她总是给我买额外的数学书在家里做。

youdao