问题描述：
When he turned arround,he found a pair of eyes_____on him.
A.looking B.watch at C.fixing on D.staring at
答案应该选D,为什么不能用C?说明原因谢谢
A.looking B.watch at C.fixing on D.staring at
答案应该选D,为什么不能用C?说明原因谢谢
问题解答：
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