辛沛沛NO-BOOK 傻瓜机从零开始学英语--Unit 87 What are you doing?（在线收听）

Unit 87   What are you doing?   

What are you doing?   你在干什么？

What are you doing?   你在干嘛？

What are you doing?   你干什么呢？

What are you doing?   干什么呢？

What are you doing?   你在干什么？

What are you doing?   你在干些什么？

What are doing?   你在干什么？

What are you doing?   你们在干什么？