Question

英语选择One can’t be really happy if ________ he enjoys doing is regarded as of no importance.

A. how B. that C. what D. where

Answer 1

【参考答案】：C
【易错解析】：句中没有先行词，可判断不是定语从句，因为所缺的部分在从句中充当do的宾语，所以从句为宾语从句，选择what

Answer 2

C

祝学习进步！