The fireman succeeded in saving all the people in the house on fire, _______they knew they were in g...
2022-11-30 04:23:23 195次 2016届山东省德州市高一1月月考英语试卷（解析版） 单项填空 反馈错误 加入收藏 正确率 : 100%
题目内容：
The fireman succeeded in saving all the people in the
house on fire, _______they knew they were in great danger themselves.
A. because B. since C.
unless D. though
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