a  What are you doing? 你在干什么？

I’m getting dressed in my room.我在房间里穿衣服。

b  What is he doing? 他在干什么？

He’s reading newspapers in the living room.他在客厅里看报纸。

c  What is she doing? 她在干什么？

She’s cooking in the kitchen.她在厨房里做饭。

d  What are they doing?他们在干什么？

 They’re making the bed in the bedroom.他们在卧室里整理床铺。