The worker you had been thinking highly selfish.
A. of proving
B. of proved
C. of to prove
D. of being proved
网友回答
A. of proving
(答案→)B. of proved
C. of to prove
D. of being proved
解析：句意：被你评价很高的那位工人被证明是自私的。Think highly of sb：高度评价某人，prove是系动词，因此不用被动语态或进行时态，又因为该句缺少主语，因此B项正确。