I have worked with him for some time and have found that he is than Jim.
A. more efficiently a worker
B. a more efficient worker
C. more an efficient worker
D. a worker more efficient
网友回答
A. more efficiently a worker
B. a more efficient worker
C. more an efficient worker
D. a worker more efficient
解析：B
解析 考查比较结构中的名词位置。此处符合“a/an＋比较级＋名词单数＋than”句型。