根据材料内容选择最佳答案。

Mr. Green: Good morning, boys and girls! My name is David Green. I'm your new English teacher. You can call me Mr. Green. I come from the USA, but I'm in Luoyang now.

Boys and girls: Good morning, Mr. Green！

Mr. Green: Are you Dave?

Bill: No. I'm Bill. He is Dave

Mr. Green: OK. Now, Bill, what's this in English?

Bill: It's a ruler. Mr. Green.

Mr. Green: What color is it?

Bill: White.

Mr. Green: Right. And what color is this pen?

Bill: It's blue. I like blue, because I like the sea.

Dave: I like green. Look! My jacket is green.

Mr. Green: Great!

Word Bank：new新的； come from来自； right正确；like喜欢； because因为；sea大海