—How many god medals did China at the 2010 Winter Olympics?
—Five.
--Look! How fast he is running!
--Hard to _______________his legs were once broken.
–What do you call this in English?
–It’s stamp. It is used ____ sending letters.
–How do you learn English so well?
–____ chatting with my uncle in America online.
---How ________ your brother?
---Fine.
-This is my good friend(朋友).
-________ name is Tony.
-Thank you for _____ me with this heavy box.
- You are welcome.
-David’s seldom late for school, ______ he?
-______, even though the weather is very bad.
—_____ the man there be our maths teacher?
—He ___ be, but I’m not sure.
-Jerry, do you mind my pointing out your mistakes?
-______. Your advice is of great value to me.