问题补充:
Mr Black is the professorI have the greatest respect.
A. to whom
B. for whom
C. whom
D. who
答案:
A. to whom
(答案→)B. for whom
C. whom
D. who
解析:本题定语从句的先行词是the professor,后面的定语从句中有一个固定搭配have respect for sb对某人尊敬;whom指代先行词在句中作为介词for的宾语。句义:布莱克先生是我最尊敬的教授。故B正确。