第二部分 英语知识应用（共两节，满分45）
第一节 单项填空（共15题；每小题1分，满分15）
21. Last night, I read ________book that is about ________ life of college students.
A a; / B the; / C a; the D /; the
22.— Why do you look sad?
— There are so many problems _____.
A. remaining to settle B. remained settling
C. remaining to be settled D. remained to be settled
