He’s read this book before, _____?
A. hasn’t he B. doesn’t he
C. isn’t he D. wasn’t he
_____ of the teachers are women in our school.
A. Two third B. Two threes C. Two thirds D. Second three
We must plant more trees after we _____ every year.
A. cut off them B. cut them off
C. cut down them D. cut them down
The supermarket provides customers _____ plastic bags for free.
A. on B. with C. of D. in
I think it’s good _____ us _____ eat healthy food.
A. for; to B. for; for C. to; for D. to; to
——We really shouldn’t use plastic bags any more when shopping.
——_____ It’s important to protect our environment.
A. So do I. B. With pleasure.
C. That’s OK. D. So it is.
