1. 选择正确答语

A. I can't find my book. B. Great! C. It's a dog. D. It's blue and white. E. Yes, it is.

1. （1） What colour is it?
3. （2） What's the matter?
5. （3） What's this?
7. （4） Is this your kite?
9. （5） Let's mix red and white.