? Do you know the most ancient city in China ─ Xi’an well? ? No this is the first time I

问题补充：

? Do you know the most ancient city in China ─ Xi’an well?

? No, this is the first time I here.

A. came

B. have come

C. am coming

D. come

答案：

A. came

(答案→)B. have come

C. am coming

D. come

解析：考查固定句型。This/It is the first time +从句从句中应用现在完成时。故答案为B。