题目内容
(2010·山东聊城市高三二模) 24.Influenza H1N1 is an illness that can result in death unless left _______ in time.
A.treat B.to treat C.treating D.treated
D
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题目内容
(2010·山东聊城市高三二模) 24.Influenza H1N1 is an illness that can result in death unless left _______ in time.
A.treat B.to treat C.treating D.treated
D