I was taught to sit quietly in class and not to speak______ someone asked me a question. A.When B.un...
2022-08-04 12:37:58 146次 天津市部分区2019-2020学年高三上学期期末英语试卷 单项填空 反馈错误 加入收藏 正确率 : 100%
题目内容：
I was taught to sit quietly in class and not to speak______ someone asked me a question.
A.When B.unless C.because D.if
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