你打电话来时，他们正在打网球。

They were playing tennis when you called.

youdao

他们正在打电话。

They are talking on the phone.

youdao

过了几天，邻居打电话来约他们去购物，说阵亡将士纪念日商店正在打折。

Their neighbor calls to invite them to go shopping-the Memorial Day sale is on.

youdao

他们正在打电话吗？

Are they talking on the phone?

youdao

他们正在打电话吗？

Are they talking on the phone?

youdao