___How time flies!It’s already twelve o’clock.
___ Oh,really? I ______ it at all.
A．don’t realizeB．Didn’t realize
C．haven’t realizedD．hadn’t realized
B
本題考查時(shí)態(tài)。這里指在別人提醒之前并沒有意識到。故用一般過去時(shí)。句意：
——時(shí)間過得多快�。∫呀�(jīng)12點(diǎn)了。——哦，真的嗎？我根本沒有意識到。
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