It was not until the end of the trip ______ I realized what a good feeling it was to have helped som...
2022-10-23 14:28:24 64次 2016届天津第一中学高三上学期第二次月考英语试卷（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 not until the end of the trip ______ I realized what a good feeling it was to have helped someone in trouble.
A. as B. that C. where D. when
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