I had just finished my test paper ___ the bell rang, announcing the exam was over. A.unless B.when C...
2022-07-31 17:02:58 133次 天津市2019-2020学年高二上学期第一次月考英语试卷 单项填空 反馈错误 加入收藏 正确率 : 100%
题目内容：
I had just finished my test paper ___ the bell rang, announcing the exam was over.
A.unless B.when C.because D.though
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