题目

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 答案：【答案】B【解析】试题分析：B； 根据分析：此句是It was…开头且去掉It was，when we were returning home I realized what a good feeling it was to have helped someone in trouble.是一个完整意义上的句子，故判断此句是一个强调句，强调when we were returning home；强调句常用句型：It is (was) +被强调部分+that(who)…。句意：正是在我回家的时候我才意识到帮助别人于危难之时感觉是多么令人愉悦。故选B

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