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A. So there has been life only on the earth? B. How long has there been life on the earth? C. I have been to the library. D. So have scientists found life on other planets yet? E. He has gone to the hospital. |
A: Hello, Lucy. Where have you been?
B: Hello, Tony. And I have found some information about the universe.
A: Really? Would you like to tell me some?
B: Of course. What do you want to know?
A: Well.
B: Millions of years.
A: Wow! So long.
B: Not yet.
A:
B: Yes, that's right. But they have discovered water on Mars.
A: That's interesting.
B: Oh, I want to give the book to Jack, but I can't find him. Do you know where he is?
A:You can find him there.
B: Thanks a lot.
