题目

— George, the old washing machine doesn't work! —How come? The repairman just demonstrated(演示)the machine to us and it well. A . had been working B . would work C . works D . was working 答案:D4.小红坐在第2列、第5行,可以用数对表示为(2,5),他前面的同学可以用数对表示为(2,4),他左边的同学可以用数对表示为(1,5),他右边的同学可以用数对表示为(3,5).
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