It is not until we know more about the situation ______ we are able to improve it. A. that B．what C．...
2022-12-31 19:12:29 75次 2012-2013学年江苏省高三期初（暑期）检测英语试卷（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
not until we know more about the situation ______ we are able to improve it.
A. that B．what
C．when D．which
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