21. When you cover the novel, you will have______ better understanding of _______life.
A. a; the B. the; a C. /；the D. a; /
【解析】选D。life泛指人生，是抽象名词，不用加冠词。understanding本来也是抽象名词，但在此受of life和better的修饰，具体化了，成了可数名词，所以要用a修饰。
22. After working all day, he was so tired that he was in no _______ to go to the party with us.
A. mood B. emotion C. sense D. taste
【解析】选A。句意为:工作一天之后，他太疲劳了以至于没有心情和我们一起去聚会。be in no mood to do sth. 没有做……的心情，为固定搭配。
