【题目】We don't need to do extra work this evening. The day's work is almost ______ now.
A.at the end
B.at an end
C.by the end
D.in the end

【答案】B
【解析】句意：今晚我们不需要加班，今天的工作几乎结束了。A. at the end“在终点”；B. at an end “结束”；C. by the end“到……结束”；D. in the end“最后”。根据题意，选B。