—Mike is the student to come to school these days.—Yes, he is. He is the only American her

—Mike is the student to come to school these days.
—Yes, he is. He is the only American here!
A. one；one
B. first；first
C. one；first
D. first；one

A. one；oneB. first；firstC. one；first(答案→)D. first；one解析：one一个，指代同名同物的任何一个；first第一，首先；句意：这些天，麦克是第一个到校的学生。——是的，他是。他是这儿唯一的美国人。结合语境可知选D。

回答的不错