河南成教 / 大学英语3
正确率:100%
5、
A. don't realize
B. haven't realized
C. didn't realize
D. hadn't realized
It's twelve o'clock, I think I must be off now.
Oh,really? I it at all.
A. don't realize
B. haven't realized
C. didn't realize
D. hadn't realized
参考答案: