— So how long have you been in Beijing?
— Just a couple of days. I’m on a great tour, you know, and I all the places of interest here.
A. visited
B. am visiting
C. have visited
D. have been visiting
网友回答
A. visited
B. am visiting
(答案→)C. have visited
D. have been visiting
解析：考查时态。句意：因此你在北京呆了多久？——只有两天、你知道我正在进行一次伟大的旅行，我参观了所有有趣的地方。结合语境可知描述的是现在已经完成的动作，故用现在完成时态，选C。