Question

【题目】 By serving others, a person focuses on someone other than himself or herself,_____can be very eye-opening and rewarding.

A. who B. which

C. what D. that

Answer 1

【答案】B

【解析】

试题分析：which在此引导非限制性定语从句，which在定语从句中作主语，表示前面所提到的情况。