题目内容

— Please stop smoking. Look at the sign. — Oh ,sorry. I     see it.
A．don’tB．won’tC．wasn’tD．didn’t
D

试题分析：句意：--请停止吸烟，看这个标志。--哦，对不起，我没有看见。根据Look at the sign可知现在已经知道了禁止吸烟的事情，刚才不知道，所以应该用一般过去式。故选D。
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