根据上下文补全对话。

A: Hello, Rob. Let's talk about inventions.

B: OK, Tina.

A: Which is your favorite?

B: My favorite invention is the washing machine.

A: Why?

B:

A: I agree with you. Without washing machines, people will have to wash their dirty clothes by hand. (Tina sees Taylor.)

A: Hi, Taylor.

C: Hi, Tina. I'm heating my lunch in the microwave(微波炉).

A: Did you know the microwave was invented at the end of World War Ⅱ?

C: I didn't know that.

A: Me too. Now we can heat our food quickly.

C: I want to eat my lunch now.