I have finished a large part of the novel written by Dickens the rest of which very diff

问题补充：

I have finished a large part of the novel written by Dickens, the rest of which very difficult.

A. is

B. are

C. was

D. were

答案：

(答案→)A. is

B. are

C. was

D. were

解析：句意：我已经看完了狄更斯写的小说的一大部分，其余的很难。定语从句中的主语是the rest of which，主语是the rest of+名词的时候，谓语取决于名词，这里which指的是the novel，所以谓语是单数，而且这部分很难是客观事实，用一般现在时，选A。