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The mobile phone has influenced people’s life a lot since it _______.

A．invents	B．invented
C．is invented	D．was invented

試題分析：句意：自從手機被發明以來，他已經太多地影響了人們的生活。Since引導的從句主句用完成時從句用一般過去式，根據題意可知用被動語態，根據句意故選D

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