单选题 I"m a college teacher, so I don"t have to stay at office all day 31 . During my 32 time, I like window-shopping. 33 you know, fashions come and 34 quickly these days. I can hardly follow them. I also like 35 and chatting with friends. But sometimes it"s difficult to find friends, for they are busy 36 their work. Besides, sleep takes up a lot of my free time. I like sleep, 37 it makes me forget unhappy things in life. My friends think I spend too much time 38 and advise me to improve my handwriting at my leisure. So far, I haven"t 39 any efforts to improve my 40 . Maybe I"ll do it after I retire from work.