一、单项选择。（1０分）
( ) 1. “________ do you exercise?” “Three times a week.”
A. How long B. How often C.How far Ｄ.How many
( ) 2. What ______ she usually _____ on weekends?
A. did, do B. do, do C. does, do D. did,do
( ) 3. Most students watch TV three ____four times a week.
A. and B.but C.or D. however
( ) 4.My parents _____eatjunk food, because it’s bad for our health.
