The ______ at this time is very busy. There are too many cars on the road.
A. light B. line C. environment D. traffic
I hear that Tom will be back _______ a month.
A. at B. in C. for D. on
Doing sports is good for your health, _______ ?
A. is it B. are they C. isn’t it D. aren’t they
––Would you mind _______ the music? Your grandpa is sleeping.
––Sorry. I’ll do it right away.
A. turning on B. turning up C. turning back D. turning off
––_______ have you been a volunteer?
––Since three years ago.
A. How long B. When C. How often D. What
He has been collecting coins _______ he was seven years old.
A. because B. while C. when D. since
