---Everything is on sale. Let’s go and see.---Great. We can buy what we like at the ________ price this time of year.
---How do your parents usually go to work? ---My mother usually goes to work _________ bus while my father ________ a bike to work.
---I want to buy the book Harry Potter. Do you know its _______? --- Not very well. Maybe fifty yuan.
---Would you mind moving the desk? ---_________. I will do it right away.
--- I hear a very big earthquake happened in Japan. Many people were injured or killed. ---___________________________.
---How long have you known the doctor ? ---_________he helped me three years ago.