[ -They are reading book.A.what are you doing B.What are you

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[ -They are reading book.A.what are you doing B.What are your grandparents doing
选A或B

[]?
-他们在读书.
A.你在做什么?
B.你的祖父母在做什么?
选B

[ -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?