单选题 .  I believe in taking action to solve problems around me. My mother wrote books to the     1    to try to change the world—some were published; others     2    manuscripts(手稿).
    When, at ninety-three, illness left her only a short time to live, she told me that she had     3    her recent book of poetry to a publisher but hadn't received a     4    from it. So I called the publisher, only to learn that the company     5    . After a few weeks of feeling     6    , I finally stopped sitting and looked for another solution.     7    , I found a wonderful company and a printer who     8    to produce twenty copies of my mother's book as quickly as they could. Sandy and Bernie were     9    by my mother's story and quickly moved into action with me. We worked together to     10    the book just a few days before I left to see my mother for the last time. I handed it to her. Her     11    made it hard for her to see and think clearly, and she struggled to read the     12    of the book I had given her. When she finally     13    her title, her face softened into a smile. "You remembered," she said. And then I knew she had     14    all along that I wouldn't let her     15    book remain a manuscript.
    Not     16    a solution wasn't an option. And this has guided me through so much of my life. When faced with a problem, I can't     17    shrug my shoulders and say, "I don't know."     18    I can't change the world alone, I work on making it better by     19    issues that mean a great deal to me. Idealistic as it may sound, I know I can make a(n)     20    .1.