machine

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machine

1.The machine this morning for no reason.2.The machine _____this morning for no reason.3.She gave us a demonstration of the machine to show us how it worked.4.With the aid of heart-lung machine, the surgeon can operate on the heart.5.The machine does not seem to work properly. I think it needs (repair)（）.6.Rewrite the following sentence by replacing the be verbs with an action verb. (请用一个英文词作答，全部小写) James is the inventor of this ing7.Either of the tools are used to repair this machine.