题目内容：

I sat down at my desk and started writing a letter of thankfulness, but when it came to actually putting the letter into the mailbox. I__________.I couldn’t do it. I suddenly felt a sense of __________and insecurity(不安).

The letter was to an old teacher with whom I kept in__________ on Facebook. For months, I read about what she __________ on her Facebook page, which helped me to live my life differently. Her volunteer work wasn’t huge. __________, she was doing small, local good deeds. __________, she changed my views on the world and for some reason, I felt I should let her know how her example__________influenced me.

I could have easily sent her an email, but that seemed not enough for such an important thank-you. That’s why I ended up__________the letter. But now here I was, standing before the mailbox, unable to put the envelope inside. What was stopping me? It suddenly hit me that I was __________of being too nice. I guess I felt strange__________it wasn’t like she was my best friend or a relative. Maybe my__________was too heartfelt. Thinking this over, I put the envelope in the mailbox__________.

Weeks later I received a message from her. It turned out she was__________ a hard time and my note__________a lot to her. She said she had no idea she was playing such a big__________in others’ life.

Not only did this letter make her happier, but her response to it brightened my world and __________my joy as well. I was so__________that it had such a great influence on her that I decided to write a letter of __________ to someone each month. Now it’s easier for me to__________the goodness in others and be more__________for this beautiful life I’m living.

1.A. stopped    B. continued    C. came    D. moved

2.A. disappointment    B. concern    C. responsibility    D. power

3.A. touch    B. mind    C. sight    D. order

4.A. gave up    B. suffered from    C. took in    D. put down

5.A. So    B. However    C. Instead    D. Meanwhile

6.A. Gradually    B. Exactly    C. Fluently    D. Frequently

7.A. widely    B. rapidly    C. loosely    D. greatly

8.A. checking    B. receiving    C. handwriting    D. reading

9.A. confident    B. afraid    C. fond    D. sure

10.A. because    B. although    C. while    D. until

11.A. explanation    B. agreement    C. present    D. message

12.A. sadly    B. officially    C. finally    D. obviously

13.A. going against    B. giving out    C. going through    D. going over

14.A. ignored    B. meant    C. offered    D. recognized

15.A. part    B. decision    C. choice    D. world

16.A. forecast    B. increased    C. expressed    D. judged

17.A. stubborn    B. lonely    C. upset    D. excited

18.A. congratulation    B. thanks    C. complaint    D. advice

19.A. hand out    B. put out    C. set out    D. find out

20.A. satisfied    B. sorry    C. grateful    D. careful