What colours are they?与 What colour are they?

What colours are they?与 What colour are they? What colour are they?这么说对吗?能不能说What colours are they? what colour are they可以变成what are they colour? what( )《colour) pictuures they are! what colour are the( they are re they,what,are,colour连词成句 what colour are they?回答是什么? What colour are they?改为单数句 what colour are they 可以变成what are they colour吗 How many colours are there in the text?What colours are they what colour are your hats?They are blacik and grey. What colours are they?They are brown.这句话那个地方错了?