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Canyourbrothermakemodelairplanes? 爱问知识人

Canyourbrothermakemodelairplanes? 爱问知识人

Can your brother make model air planes?Can your brother make model air planes?Can your brother make model air planes? —Yes,this week he is building a new model.请问为什么不用had built?

表示这个星期他正在做一个,所以用进行时.