题目内容：

I used to be a very self­centered 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 I 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 part­time job at 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 also 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．bad­tempered 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