Question

【题目】Everybody rose and clapped their hands the end of the concert.
A.by
B.in
C.at
D.for

Answer 1

【答案】C
【解析】句意：音乐会结束时，大家起立鼓掌。固定短语：at the end of…“在...…末尾/结尾”；in the end“最终，最后”，副词短语；by the end of“到…...为止”。结合句意和语境可知选C。