about

我大约六点钟到家。

I get home at ___about six o'clock.

这本书是关于动物的。

This is a book ___about animals.

她在谈论什么？

What is she talking ___about?

我正要离开时马克到了。

I was ___about to leave when Mark arrived.

孩子们在公园里跑来跑去。

Children were running ___about in the park.