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一道英语题 Do you remember__to Professor Smith during your last v

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一道英语题 Do you remember__to Professor Smith during your last visit
A to be introduced B havng introduced
C doing that D to have introduced
答案为什么是D
我觉得选B阿 可是答案说是B 求解释
不好意思 打错了 答案是B 为什么选B呢
一道英语题 Do you remember__to Professor Smith during your last v
during your last visit明显是过去进行时啊!
remember doing+sth句型表示过去已经做了某事,
结论:B