一、单项填空。从ABCD四个选项中,选出最佳答案。（共15分）
( ) 1. “________ do you exercise?” “Three tim es a week.”
A. How long B. How often C. How far D. How many
( ) 2. Most students watch TV three ____four times a week.
A. and B. but C. or D. however
( ) 3.Thanks a lot for _______ me.
A. invite B. invite C. inviting D. inviting
( ) 4. I’m ____ heavier than my brother.
A. a few B. few C. a little D. little
