1. (2021三上·海口期中) 根据对话内容，选择方框内句子完成下列对话。每个句子只能使用一次。

A. Twelve. B. Hi, Sam. C. It's green. D. It's black. E. It's a yellow cap.

A: Hello, Lingling.

B:

A: Listen to me(听我的指令). Point to the blackboard. What colour is it(什么颜色)?

B:

A: Good. Point to the door. What colour is it?

B: It's a green door.

A: OK. Look at the cap. What colour is it?

B: It's yellow.

A: Look, how many chairs?

B:

A: You're great.