By serving others,a person focuses on someone other than himself……By serving others,a person focuses on someone other than himself or herself,_____can be cery eye-opening and rewarding.A.who B.which C.what D.that问一下这一句为什么不可以关系代词指代 a person

问题描述:

By serving others,a person focuses on someone other than himself……
By serving others,a person focuses on someone other than himself or herself,_____can be cery eye-opening and rewarding.
A.who B.which C.what D.that
问一下这一句为什么不可以关系代词指代 a person

这道题是一个定语从句 who做引导词 the person 作为这个定语从句的先行词~