---Volunteering is being popular in China .
--- Yeah, people are now aware that helping others is helping themselves.
A. naturally
B. successfully
C. thoroughly
D. increasingly
网友回答
A. naturally
B. successfully
C. thoroughly
(答案→)D. increasingly
解析：副词辨析。A自然地；B成功地；C彻底地；D越来越…；句意：—在中国志愿工作越来越受欢迎。根据句意说明D正确。