句子改错 What color are these national flags .

what about these flags? what are these?----these are apples.(给句子改错） these,shoes,color,what,are what color还是what colors are these flowers? --What are these?--They're watchs.改错 改错(What're) these?(These are) English (books). what color is the our national flag? What color is our national flag? What are these girls?They are my cousins.【改错】 What color are ______? what color are t what color is your book 和 what color are you books 这两个句子的be