二、单项选择（共15小题，计分15分）
( )21. It is _______ useful book. I borrowed it from ________ school library.
A. an; a B. a; an C. a; the D. an; the
( )22.-Susan, is this your dictionary?
-Oh, it's not . Ask Li Lei, he is looking for_______.
A. me; hers B. mine; him C. my; her D. mine; his
（ ）23. I can’t believe a little girl can write many books.
A. so; so B. such; such C. so; such D. such; so
（ ）24.―Does the rule work?
―Yes, students are absent.
A. Some B. More C. All D. No
