【題目】A great scientist is someone who d his/her life to helping others.

【答案】devotes
【解析】devotes 句意：一個偉大的科學家就是把自己的一生奉獻給幫助別人的人。用一般現(xiàn)在時態(tài)，主語是單數(shù)第三人稱someone，故填devotes。

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