问题
选择题
I _________ him before. But my friends _________ him two days ago. [ ]
A. didn't meet; met
B. haven't met; met
C. don't meet; meet
D. hadn't met; meet
答案
答案：B
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I _________ him before. But my friends _________ him two days ago. [ ]
A. didn't meet; met
B. haven't met; met
C. don't meet; meet
D. hadn't met; meet
答案：B