My favourite colour is red and green 中,colour为什么用单数

My favourite colour is red and green 中,colour为什么用单数 l ＿red and it is my favourite colour black and green are my favourite colour 哪里错了 My favourite colour( )green and yellow.括号里应填is还是are? My favourite colour is red 改同义句 Green is my favourite colour now.(改为一般过去时） favourite,dlue,my,is,colour What is my favourite colour He favourite colour is green.(改错） My favourite colour is red.(对red提问该怎么做?) May be my favourite colour is not 下列句子中有一处错误,找出来并改正 Black and green are my favourite colour.