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?

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?
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?

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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