A: Hi, Mark! Have you ever been to Beijing?
B: Yes, I have.
A:
B: I went there to visit my pen friend last month.
A:
B: He has been there since he went to Beijing University.
A:
B: Yes, we have. We visited the longest wall there.
A: I've never been there. But this summer I will go there with my parents.
B: Great!
A: Thank you!
