A:who____the washing machine ______?B:It was invented by Fisher.A .was;invented B.was;invented by

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• A:who____the washing machine ______?B:It was invented by Fisher.A .was;invented B.was;invented by这个题该选哪一个?
• They have invented a new (type) of washing machine.They have invented a new () of washing machine.选项: a、a. type b、 b. indicate c、 c. original d、 d. proceed
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