Ι. 单项选择 (本题15分)
1．He is _____ unusual writer. He can write _____ useful book.
A. a; the B. a; a C. the; an D. an; a
2. Remember this, my son. _____careful you are, _____mistakes you will make.
A. The more ; the less B. The less ; the fewer
C. The more ; the fewer D. The more ; the more
3．-- do the children take art lessons ?
--Three or four times a week.
A. How long B. How many times
C. How soon D.How often
