He is a strict but kind-hearted father the children respect but are afraid of.A. /B. thatC

问题补充：

He is a strict but kind-hearted father,the children respect but are afraid of.

A. /

B. that

C. one whom

D. for whom

答案：

A. /

B. that

(答案→)C. one whom

D. for whom

解析：考查定语从句。先行词one代指a strict but kind-hearted father,在定语从句中作宾语，选C。