It isthe pupils do in their spare time really them to take their place in society as citi

问题补充：

It isthe pupils do in their spare time really them to take their place in society as citizens when they grow up.

A. what; that; prepare

B. that; what; prepares

C. what; that; prepares

D. that; what; prepare

答案：

A. what; that; prepare

B. that; what; prepares

(答案→)C. what; that; prepares

D. that; what; prepare

解析：考查从句辨析。It is...that是强调句型，可以强调除谓语外的任何成分，这里强调的是主语从句，主语从句the pupils do in their spare time中的do缺少宾语，用what引导主语从句，that引导主语从句不作成分，排除B、D；句子作主语相当于第三人称单数，故，谓语用单数，排除A；故选C。