Question

That's one of the things which Black ___ ,had a clear idea about.

A.whom I do not like B.which I do not like
C.I do not like him D.I do not like it
详解翻译

Answer 1

That's one of the things which Black whom I do not like,had a clear idea about.
那就是那个我不喜欢的名叫布莱克的家伙十分清楚的那些事中的一件。

That's one of the things [which Black (whom I do not like),had a clear idea about].

句子可简化为

That is one of the things.那就是那些事情中的一件。

things=which Black had a clear idea about. which引导的定语从句 , 那些布莱克熟悉的事情。

Black=whom I don't like. whom引导的定语从句, 布莱克--就是我不喜欢的那个

Answer 2

选C， whom I do not like 定语从句修饰Black which Black had a clear idea about 定语从句修饰things .
那是我不喜欢的布莱克非常清楚的一件事之一