– You seem to know much about the city.
– That’s true. I it four times in the last three years.
A. visited
B. am visiting
C. have visited
D. will visit
网友回答
A. visited
B. am visiting
(答案→)C. have visited
D. will visit
解析：根据句意可以得知我去过那个城市4次了，对现在的影响是很了解那座城市，
故要用完成时结构为have或has+过去分词，故选C。