题目内容
“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 |
C
略
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“It’s twelve o’clock, I think I must be off now.” “Oh, really？ I ______ it at all.”