问题
选择题
---Excuse me. You shouldn’t smoke here. Look at the sign “NO SMOKING HERE”.
--Sorry, I ________ it just now.
A．doesn’t see
B．haven’t seen
C．didn’t see
D．hadn’t seen
答案
答案：C
just now 意思是“刚才”，表示过去的时间，故选C.
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