问题
单项选择题
When walking down the street, I came across David, when I()for years.
A. didn’t see
B. haven’t seen
C. hadn’t seen
D. wouldn’t see
答案
参考答案:C
When walking down the street, I came across David, when I()for years.
A. didn’t see
B. haven’t seen
C. hadn’t seen
D. wouldn’t see
参考答案:C