It was careless of Lucy to________ the same mistake once again.
A. recycle B. reduce C. reuse D. repeat
—Jerry，________ are you going to do with the old newspapers?
—I'm going to take them to the recycling centre.
A. how B. what C. which D. where
To protect the environment，we are trying our best to make our school a________ school.
A. large B. new C. cool D. green
The shop is not far.Mary will walk________ ride a bike there.
A. and B. but C. or D. so
The government in china has ended its one－child ________ and let one family have two children.
A. policy B. step C. method D. road
The river that is seriously polluted is________ danger to the villagers.
A. a B. an C. the D. /
