问题
选择题
– 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
答案
答案：C
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。