It was when we were returning home ________ I realized what a good feeling it was to have helped som...
2022-11-01 12:58:50 52次 2015年全国普通高等学校招生统一考试英语（湖南卷解析版） 单项填空 反馈错误 加入收藏 正确率 : 100%
题目内容：
It was when we were returning home ________ I realized what a good feeling it was to have helped someone in trouble.
A. which B. that C. where D. how
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