What color is the curtain?这句话中what作什么语?

What color is the jacket?(What color is the jacket?( what color is the blackboard? what is the color of what is the color是什么意思 what color is the banana? What color is the sea? What color is the apple What color is the sea? what is the color与what color is it 区别 What is color is the pen 改错 what color is the pen答句 what color is the quilt 怎么回答 what color is the our national flag? color,quilt,is,the,what.(练词成句) ruler the what color is连成一句话 what color is the key?病句吗 翻译 what color is the key? what color is the tree 怎么回答?