给下列单词分类，将序号填在横线上。
①milk ②green③elephant④eight⑤two ⑥yellow⑦cake⑧duck⑨four⑩red
食物＿＿＿＿＿＿＿＿＿＿＿动物＿＿＿＿＿＿＿＿＿＿＿
颜色＿＿＿＿＿＿＿＿＿＿＿数字＿＿＿＿＿＿＿＿＿＿＿
A. I have a ruler.
B. Really? I like it.
C. Guess!
A. This is Mike!
B. Good afternoon.
C. Good morning.
A. Bye-bye.
B. You are welcome.
C. 0K!
A. Sure. Here you are!
B.Thank you!
C. No, thanks.