She walked home by herself at night, _____ she knew that it was dangerous. A. once B. as C. unless D...
2023-01-02 16:11:48 69次 2014届山西省高一下学期期中考试英语试卷（解析版） 单项填空 反馈错误 加入收藏 正确率 : 100%
题目内容：
She walked home by herself at night, _____
she knew that it was dangerous.
A. once B.
as C. unless D. although
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