问题描述：
Please tell us ______.A.which room to live.B.which pencil to write with
Please tell us ______.A.which room to live.B.which pencil to write with.C.to talk about which picture.D.to buy which book
Please tell us ______.A.which room to live.B.which pencil to write with.C.to talk about which picture.D.to buy which book
问题解答：
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