Question

【题目】In China and some other countries，it is impolite to speak loudly________you are having a meal．

A．before

B．while

C．after

Answer 1

【答案】B

【解析】句意：在中国和一些其他国家，你吃饭时大声说话是不礼貌的。本题考查连词。before在……之前；while当……时候；after在……之后。根据句意可知选B。