他们自愿献出时间来帮助这位老人。

They volunteer their time to help the old man.

youdao

我想我们应该帮助这位老人。

I think we must help the old man.

youdao

警察帮助这位老人过马路。

The policeman helped the old man cross the road.

youdao

警察帮助这位老人过马路。

The policeman helped the old man cross the road.

youdao