问题补充:
------ Have you seen your nephew lately?
------ Yes, in fact, I saw him yesterday. I him for three years.
A. haven’t
B. didn’t
C. hadn’t
D. don’t
答案:
A. haven’t
B. didn’t
(答案→)C. hadn’t
D. don’t
解析:通过回答“我昨天看见他。”判断出“三年没见他”发生在昨天之前,应该使用过去完成时态,所以答案C。