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题型：单选题 题类： 难易度：普通
外研（新标准）版英语九年级上册Module 9 Great inventions Unit 2课时优化训练
—I am going to _____a new hobby like swimming or dancing.
— It's warm.
—I don't know either.
—Yes, it helps us ___________a servant (仆人).
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