简介： ( ) 21. Vivian wrote a large number of songs. She is a great musician.【来源：21•世纪•教育•网】 A. a lot of B. a few C. some. ( ) 22. We aren’t short of workers now. We don’t need any more.【来源：21cnj*y.co*m】 A. have new B. have enough C. have hard ( ) 23. Jack is a poo...