Since I knew how hard the life they lead is, I have understood ____ they need so much money. A. how ...
2022-12-06 13:10:22 150次 2013-2014学年江苏淮安楚州中学高一上学期第一次阶段测试英语试卷（解析版） 单项填空 反馈错误 加入收藏 正确率 : 100%
题目内容：
Since I knew how hard the life they lead is, I have
understood ____ they need so much money.
A. how B.
why C. whether D. when
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