While (remembering) mainly (for) the invention of the telephone, Alexander Graham Bell devoted his life (to) (helping the deaf).

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问题 While (remembering) mainly (for) the invention of the telephone, Alexander Graham Bell devoted his life (to) (helping the deaf).

选项 A、remembering
B、for
C、to
D、helping the deaf

答案A

解析 应改为remembered。根据主句主语Alexander Graham Bell和re-member一词的逻辑关系,应该是被动关系,故改为过去分词remembered。
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