He made a serious mistake，but he took action to change that it got worse. A. before B. when C. becau...
2022-11-25 20:54:57 50次 2016届江苏常熟九年级4月调研测试英语试卷（解析版） 单项填空 反馈错误 加入收藏 正确率 : 100%
题目内容：
He made a serious mistake，but he took action to change that it got worse.
A. before B. when C. because D. until
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