单项选择题

Questions 17~20 are based on the following talk. You now have 20 seconds to read the questions 17~20. How to get over the first step to write a letter

A.You consider that you owe somebody a letter.
B.You consider that letters are gifts.
C.You consider that writing letters makes you feel cheerful.
D.You should feel ashamed that you haven’t answered a letter.