问题描述：
10----Hey,look where you are going?.
10----Hey,look where you are going?
-----Oh,I'm terribly sorry.______.
a.I'm not noticing b.I wasn't noticing c.I haven't noticed 请详细分析一下选的理由
10----Hey,look where you are going?
-----Oh,I'm terribly sorry.______.
a.I'm not noticing b.I wasn't noticing c.I haven't noticed 请详细分析一下选的理由
问题解答：
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