“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
网友回答
A. don’t realize
B. haven’t realized
(答案→)C. didn’t realize
D. hadn’t realized
解析：可联系答.案.网客服索取。