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题目内容
（西安交通大学-土木工程-英语）
This is the second time that Mr. Smith
_the Great Wall, the first time being ten years ago. A. visited
B. would have visited
C. has visited D. is visiting
_the Great Wall, the first time being ten years ago. A. visited
B. would have visited
C. has visited D. is visiting
参考答案