I am one of the students who English well in my class but he is the only one of us maths

问题补充：

I am one of the students who English well in my class but he is the only one of us maths well.

A. studies; learns

B. study; learns

C. study; learn

D. studies; learn

答案：

A. studies; learns

(答案→)B. study; learns

C. study; learn

D. studies; learn

解析：在定语从句中，one of +复数名词,后面的定语从句的位于动词用复数，the(only)one of +复数名词,后面所接的定语从句中，位于动词用单数。根据语境所以选B。