Scientists have many theories about how the universe into being.
______ a happy life, try to look at the positive side in every situation.
---May I serve your dishes, sir? ---_____________.
The Internet ________ millions of pages of data.
---- Mr Gordon asked me to remind you of the meeting this afternoon. Don’t forget it! ---- OK, I ______________.
The Great Wall is _________________ tourist attraction that millions of people pour in every year.