Question

【题目】________ we may find interesting is that it usually takes more to be polite.

A. That

B. What

C. Which

D. /

Answer 1

【答案】B

【解析】考查主语从句。句意：我们可能会发现有趣的是通常需要更多的礼貌。此处是主语从句做主语，从句没有引导词，缺少宾语，故答案为B。只有what才起双重作用。