21.It was when we were returning home I realized what a good feeling it was to have helped someone in trouble.
参考答案
B
It was when we were returning…——2015 高考英语第 21 题答案解析
2015_省自主命题（湖南）
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2015_省自主命题（湖南）
21.It was when we were returning home I realized what a good feeling it was to have helped someone in trouble.
B