This is Mr. Green’s visit to America. He has never been there before.A. firstB. secondC. t

问题补充：

This is Mr. Green’s visit to America. He has never been there before.

A. first

B. second

C. third

D. fifth

答案：

(答案→)A. first

B. second

C. third

D. fifth

解析：句意：这是格林先生第一次参观美国。以前他从没有去过那里。根据后句，故选A，第一。