题目内容：

I used to be a very self-centered person, but in the past two years I have really changed. I have started to think about other people      I think about myself. I am happy that I am becoming a        person.

I think my       started when I was at Palomar College. At first, I just wanted to get my        and be left alone. I thought I was smarter than everyone else, so I hardly ever         to anyone in my classes. By the end of my first semester, I was really      . It seemed as if everyone but me had made friends and was having fun. So tried a(n)      . I started asking people around me how they were doing, and if they were having trouble I          to help. That was really a big          for me. By the end of the year, I had several new friends, and two of          are still my best friends today.

A bigger cause of my new         , however, came when I took a part-time job at a Vista Nursing Home. One old lady there who had Alzheimer’s disease became my           . Every time I came into her room, she was so            because she thought I was her daughter. Her real daughter never         her, so I took her place. She let me       . that making others feel good made me feel good, too. when she died, I was      , but I was very grateful to her.

I think I am a much       person today than I used to be, and I hope I will not         these experiences. They have         me to care about other people more than about myself. I      who I am today, and I could not say that a few years ago.

1.A. since          B. before         C. or          D. unless

2.A. famous        B. simple        C. different      D. skilled

3.A. education      B. career         C. tour         D. change

4.A. balance        B. homework     C. degree       D. interest

5.A. talked         B. wrote         C. lied          D. reported

6.A. careful        B. lonely         C. curious       D. guilty

7.A. argument      B. game         C. experiment    D. defence

8.A. dared         B. offered        C. hesitated      D. happened

9.A. dream        B. problem        C. duty         D. step

10.A. us           B. which          C. them        D. whom

11.A. attitude       B. hobby         C. hope         D. luck

12.A. friend        B. partner         C. guide        D. guest

13.A. polite        B. happy          C. strange       D. confident

14.A. bothered      B. answered       C. visited        D. trusted

15.A. explain       B. guess          C. declare        D. see

16.A. homeless     B. heartbroken     C. bad-tempered   D. hopeless

17.A. quieter       B. busier          C. better         D. richer

18.A. forget        B. face           C. improve       D. analyze

19.A. forced       B. preferred        C. ordered       D. taught

20.A. miss        B. like             C. wonder       D. expect