electricity is ____(change)into the form of sound energy in the tape recorder用正确形式填空

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electricityis____(change)intotheformofsoundenergyinthetaperecorder用正确形式填空electricityis____(change)in

electricity is ____(change)into the form of sound energy in the tape recorder用正确形式填空
electricity is ____(change)into the form of sound energy in the tape recorder
用正确形式填空

electricity is ____(change)into the form of sound energy in the tape recorder用正确形式填空
changed
被动,用被动形式