阅读下面短文，从短文后各题所给的四个选项（A, B, C 和D）中，选出可以填入空白处的最佳选项，并在答题卡上将该项涂黑。
The ringing of the phone runs through my head, telling me someone needs help. I pick it up and    1   the routine, “Teen Lifeline, this is Amber.” About 45 minutes later I hang up, feeling pleased because I’ve helped another teen. Volunteering at Teen Lifeline has helped me realize how to deal with my own    2   and help others.
“My mom is always fighting with me. I want to run away.” Some teens feel their    3   is a prison, rather than a place of shelter and safety. They feel parents are only there to make their lives    4  . We try to help the teens realize the danger they could be in    5   giving them advice. All we can do is to ask questions. We also try to find out where the teens would go and how they would survive. We give them a phone number if they     6   don’t want to live in their “prison”.
“I don’t want to    7   any more” is something we hear, and suicide (自杀) calls are some of the hardest to    8  . We try to discover why they want to take their lives and how serious they are by asking them to rate it on a scale of one to ten. One means they are    9   suicide but haven’t decided how, and ten means they are always thinking about it and have a    10   . We ask them to make a promise that they will not hurt themselves. And sometimes we ask for their telephone numbers    11  we can call back to make sure that they are okay.
Although many calls are about relatively    12   problems, volunteering at Teen Lifeline has helped me realize I’m not the    13   person with problems, and has taught me how to    14   with my heart. I have made a    15   and saved many lives — possibly even my own, too.  
1.  A. set             B. stop             C. change           D. start
2.  A. decisions      B. disadvantages    C. problems        D. opinions
3.  A. school           B. home         C. bedroom          D. classroom
4.  A. simple         B. unusual           C. happy       D. terrible
5.  A. for             B. of           C. without          D. besides
6.  A. even           B. almost          C. still                D. mostly
7.  A. live            B. study            C. call            D. listen
8.  A. carry out       B. deal with        C. believe in       D. find out
9.  A. accepting       B. considering      C. objecting           D. giving
10.  A. plan            B. doubt            C. purpose          D. question
11.  A. in case         B. if               C. so that           D. when
12.  A. important       B. small            C. normal          D. typical
13.  A. very            B. only             C. exact           D. possible
14.  A. write            B. see               C. learn             D. listen
15.  A. difference     B. choice           C. promise          D. decision