1. I have worked with him for some time and have found that he is _______ than John.
A. more efficiently a worker B. a more efficient worker
C. more an efficient worker D. a worker more efficiently
【解析】选B。本空所填的词需要作表语。worker是名词，可作表语，前面要用形容词修饰。形容词的比较级应放在名词前。
