根据对话内容，从A到G选项中'选出能填入空白处的最佳选项'每个选项只使用一次。选项中有两项为多余项。

A: Excuse me! Can I ask you some questions' sir?

B: Sure.

A:

B: No' I am from the USA.

A: Is this your first visit to China?

B: Yes. I am on vacation with my family.

A:

B: For two months. And our trip will be over.

A:

B: Four. All of them are wonderful!

A: Now you are in Xi'an.

B: I love this city. The food is delicious and the people are very nice.

A:  

B: Thank you!
 

A. How long have you been in China? B. I hope you will have a good time here. C. How do you like the city? D. Are you from Canada? E. How many times have you been there? F. How many cities have you visited? G. You're lucky.