题目

 — Could you take my place and go to meet Smith?    — _______. — He is a tall man wearing short hair. A. Why me this time?                               B. Are you familiar with him? C. How can I recognize him?                     D. What would you like to tell me?  答案：C---What do you think we can do for our aged parents? ---You _______ do anything except to be with them and be yourself.    A. don’t have to       B. oughtn’t to          C. mustn’t           D. can’t