问题描述：
选择题：He__the display for several minutes before re-entering his shop.
（A）was gazing at
（B）gazed at
（C）had gazed at
（D）had being gazing at
答案是B,我觉得是C.请高手分析一下.
参照新概念英语第三册第六课选择题5.
（A）was gazing at
（B）gazed at
（C）had gazed at
（D）had being gazing at
答案是B,我觉得是C.请高手分析一下.
参照新概念英语第三册第六课选择题5.
问题解答：
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