most parents care about is to provide the best education for their children.A. What B. Tha

问题补充：

most parents care about is to provide the best education for their children.

A. What

B. That

C. How

D. Whether

答案：

(答案→)A. What

B. That

C. How

D. Whether

解析：考查主语从句：句意：大多数父母关心的是给孩子提供最好的教育。What引导的是主语从句，主语从句中缺少宾语，用what，that连接主语从句的时候，只是连接的作用，不做成分，C怎样，D是否，不符合句意。选A。