(2018•山东) 阅读短文，在空白处填入适当的内容或括号内单词的正确形式 .
　　Wang Li，a  1  ( vocation ) school student，did a voluntary job in a community last term.
　　As a volunteer，she  2  ( choose ) to teach some elderly people to  3  （sing）and dance. She went to the community three  4  ( time ) a month.
　　Wang Li said that she   5 ( develop ) her skills while 6 ( teach ) them. What she learned from her job was much more   7   she expected. " They taught   8   ( I ) how to communicate with others. I learned to be polite and patient from these elderly people. They were very  9  ( friend ) to me，" said Wang Li.
　　" The job gave me a sense of achievement (成就)，  10  ( especial ) when they said to me，' Thank you for your hard work !’" said Wang Li.