问题描述：
Don't have your children__for hours reading books in__a room dark.(sitting,s
A,sitting,so B,sit,such C,to be sitting,so D,to sit,such该选哪个?为什么?
A,sitting,so B,sit,such C,to be sitting,so D,to sit,such该选哪个?为什么?
问题解答：
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