Not once _____ their plan. A．did they change B．they changed C．changed they D．they did change
2023-02-01 07:15:51 138次 2010届三轮回扣语法专项训练（特殊句式1） 单项填空 反馈错误 加入收藏 正确率 : 100%
题目内容：
Not once _____ their plan.
|
A．did they change
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B．they changed
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C．changed they
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D．they did change
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本题链接：
