[ -They are reading book.A.what are you doing B.What are you
[ -They are reading book.A.what are you doing B.What are you
what book are you reading?
补全对话A:What are you doing there?B:I am reading a book.A:You h
what are you doing now?They are---
what are you doing?i'm reading a book by Mark Twain.A.writte
What book are you reading,Tom?
what are you reading about book?
What are you reading
what are you doing.
what you are doing
what are you doing
What are you doing?