A: That is great! I've always wanted to visit there.(5)________
B: Certainly. I visited many places of interest.
A: You are lucky.
选项：

A: How long did you stay there?
B: Did you have a good time there?
C: No, I have been there before.
D: How many times have you been there?
E: Where have you been?
F: Where did you go?