( ) 21. John is ________ honest boy. He has ________ useful book.
A. an; an B. a; a C. a; an D. an; a
( ) 22. ________ your teacher __________ ? -- She is friendly and helpful.
A. How is ; like B. What is ; like C. How does; like D. What does ; like
( )23. ---Mum, could you buy me an MP4 like this?
--- Certainly, we can buy ______ one than this, but ______ this.
A. a better; better than B. a cheaper; as good as
C. a worse; as good as D. a more important; not as good as
