一、 单项选择（共15小题；每小题1分，计15分）
从下列各题A、B、C、D四个选项中，选择一个能填入题干空白处的最佳答案。
( )1.The Smiths ___ sending e-mails __ letters, because it is faster.
A. prefer, to writing B. prefer, to write
C. prefers, to writing D. prefers, to write
( )2. It’s generous __ ___ them to donate money to UNICEF. They think it is important _____ them to help poor children go to school.
A. to; for B. for; of C. of; to D. of; for
( )3. ----I'm too busy. Could you do _______to help me?
----Of course. I can do_______ for you if you want me to.
A. anything ; something B. something; anything
C. anything ; anything D. something ; something
