Question

【题目】I have been living in the United States for twenty years, but seldom __________ so lonely as now.

A. have I felt B. I had felt C. I have felt D. had I felt

Answer 1

【答案】A

【解析】现在觉得孤独，所以用现在完成时，前面用的现在完成进行时，前后时态应该一致。如果选D，表示过去的过去，过去完成时，不合题意。