.
—May I remind you that a Mr. Zhang is waiting downstairs, sir?
—Oh, dear. I about it.
A. forget
B. forgot
C. have forgotten
D. had forgotten
网友回答
A. forget
(答案→)B. forgot
C. have forgotten
D. had forgotten
解析：考查时态。“先生，一位姓张的先生在楼下等你。”“噢，天啊！我忘记了。”指对话之前的事情，应该用一般过去时，即刚才忘记了。故选B。