He made a serious mistake, but he took immediate action to change that ______ it got worse. A. until...
2022-09-22 21:27:15 60次 安徽省六安市、农机校和宋店中心校）2019届九年级下学期第二次模拟考试英语试卷 单选题 反馈错误 加入收藏 正确率 : 100%
题目内容：
He made a serious mistake, but he took immediate action to change that ______ it got worse.
A. until B. when C. because D. before
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