题目内容
Mr. Smith, who often helped passers-by repair their bikes, said that what he did was not paid but _______.
A. relevant B. optional C. suitable D. voluntary
D
【解析】
试题分析:考查形容词辨析。句意:史密斯先生,经常帮助行人修理自行车,他说他做的事情不要报酬,是自愿的。A相关的;B可选择的;C合适的;D志愿的,无偿的。not...but...不是......,而是......,故选D。
考点:考查形容词辨析
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