“Why do you often forget to ______ the lights when you go out of the classroom?”

• reduce

• turn off

• close

• shut down

What can we do ____ air pollution?

• reduce

• to reduce

• reducing

• to reducing

This newspaper is made of ______ paper.

• recycle

• recycled

• old

• waste

If we all use ______ bags, we’ll help the environment.

• new

• cheap

• reusable

• reduced

These three Rs ______ reduce, reuse and recycle.

• stand up

• stand for

• ask for

• means

If there is a rubbish bin in every class, the classroom will become ______.

• harmful

• lighter

• dirtier

• cleaner

If I ______ this exam, I’ll go to the university next summer.

• pass

• to pass

• had passed

• passed

“Here’s my phone number.” - “Thanks, I _____ you a call if I _____ some help.”

• A. will give / will need

• B. would give / needed

• C. give / need

• D. will give / need

I ______ you if you need my help.

• am helping

• could help

• will help

• helped

If we use ______ paper, we will save a lot of trees.

• fewer

• less

• more

• much