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The shop is not far.Mary will walk________ ride a bike there.

A. and B. but C. or D. so

To protect the environment，we are trying our best to make our school a________ school.

A. large B. new C. cool D. green

—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

It was careless of Lucy to________ the same mistake once again.

A. recycle B. reduce C. reuse D. repeat

Everyone in our family cares about the environment and we________ trees every year.

A. plant B. planted

C. are planting D. have planted

Our country has a problem with its air pollution.________must be done!

A. Everything B. Something

C. Anything D. Nothing

I can't believe it! ________ a little boy knows________ much about space.

A. So；such B. Such；so

C. Such；such D. So；so

—Oh，Mum，I simply like my new bike.

—Look after it________ it will last long.

A. since B. even though

C. because D. so that

I don't know how to write the report so I will go to Mr Brown's office to________ advice.

A. ask for B. hope for

C. think of D. find out

The children have been waiting for half an hour and they are getting________.

A. unpopular B. comfortable

C. impatient D. careless