问题描述：
Don't have your children sitting for hours doing their homework in so dark a room
Don't have your children ____ for hours doing their homework in ___ dark a room.(A)
A.sitting ,so B.sit ,such C.to be sitting ,so D.to sit ,such
请讲解一下这道题,再翻下这句子
Don't have your children ____ for hours doing their homework in ___ dark a room.(A)
A.sitting ,so B.sit ,such C.to be sitting ,so D.to sit ,such
请讲解一下这道题,再翻下这句子
问题解答：
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