what's the shape of this ball 还是 what's the shapes of this ball哪个对?如果都对,哪个更好?

问题描述:

what's the shape of this ball 还是 what's the shapes of this ball哪个对?如果都对,哪个更好?

前者!
不管是什么形状,都是这个球的形状,用shape 单数
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