Question

【题目】I had just finished my test paper ___ the bell rang, announcing the exam was over.

A.unlessB.whenC.becauseD.though

Answer 1

【答案】B

【解析】

考查连词辨析。句意：我刚刚完成试卷这时铃响了，宣布考试结束了。A. unless除非；B. when当….时，这时；C. because因为；D. though尽管。根据句意可知B选项符合句意。故选B。