It is of great importance _______ parents say and do in family life, which may have a life-long effe...
2022-10-31 16:01:43 182次 2014-2015学年江苏淮安市高三第五次模拟考试英语试卷（解析版） 单项填空 反馈错误 加入收藏 正确率 : 100%
题目内容：
It is of great importance _______ parents say and do in family life, which may have a life-long effect on their children.
A. what B. that C. how D. why
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