---Could you let me know ________ yesterday ?
---Because the traffic was heavy .
A. why did you come late B. why you came late
C. why do you come late D. why you come late
---How do your parents usually go to work?
---My mother usually goes to work _________ bus while my father ________ a bike to work.
A. takes, rides B. take, by C. by, by D. by, rides
---I want to buy the book Harry Potter. Do you know its _______?
--- Not very well. Maybe fifty yuan.
A. cover B. size C. color D. price
---Would you mind moving the desk?
--- _________. I will do it right away.
A. Yes, I do B. No, I am not C. Of course D. No, not at all
--- I hear a very big earthquake happened in Japan. Many people were injured or killed.
---___________________________.
A. Oh,I’m terribly sorry to hear that. B. What a bad news!
C. It doesn’t matter D.They are really poor.
---How long have you known the doctor ?
---_________he helped me three years ago.
A. When B. Before C. Because D. Since