By serving others, a person focuses on someone other than himself or herself, can be ver

发布时间：2020-08-17 14:23:46

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

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A. who
(答案→)B. which
C. what
D. that
解析：which在此引导非限制性定语从句，which在定语从句中用作主语，表示前面所提到的情况。
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