A: Hey, you’re look very serious.
B: Yes, I’m serious because tomorrow I have a test science subject and I don't like it. It’s very difficult.
A: Oh, let me give it a try. I like science.
B: Ok. The first basic question: Do you know Albert Einstein? Who is he?
A: Yes, I know him who is Father of genetics.
B: Next question: What is his works?
A: Uh, I think he discovered the principle of genetic inheritance.
B: Ahh. And what type of whale is an animal?
A: Hmm. It is a fish!
B: The last question: Do you think your answers are correct all?
A: No, I think my answers aren’t correct all.
B: Yes, It’s first your answer is correct.