把下列句子排列成一段对话。 A. What colour is it? B. What’s this in the box? C. It’s yellow. And it is for you. D. Good morning, Liu Tao. E. Thank you, Uncle Yang. F. Good morning, Uncle Yang. G. It’s a toy robot. 正确的顺序:F (_____)(_____)(_____)(_____)(_____)(_____)