So difficult it to work with him in the same pany that I determined to find another job.
A. I have felt
B. have I felt
C. I did feel
D. did I feel
网友回答
A. I have felt
B. have I felt
C. I did feel
(答案→)D. did I feel
解析：这是一个以So difficult 开头的句子，强调状语，所以要用倒装语序。