问题
选择题
Do you _________ or serve in an organization or are you a member of some group?
A．simplify
B．require
C．sign
D．volunteer
答案
答案：D
题目分析：考查动词辨析。A简单化；B需要，请求；C签字；D志愿。句意：你志愿为某个组织服务吗还是你是某个团队的一员？根据句意所以选D。
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