OW5 - Unit 8

90% of American rubbish is buried in ______.

• environment

• landfills

• junk

Scientists have invented ______ devices so that we can save energy.

• energy-efficient

• natural

• man-made

Cloth bags can be _____, so they are better for our environemnt.

• reduced

• renewable

• reused

My dad is an architecture. He _____ our home.

• designed

• conserved

• drew

Glass must be melt to be ______.

• reduced

• recycled

• built

To _____ electricity, we only leave our heater on two hours per day.

• recycle

• reuse

• conserve

We've cleaned all of the old _______ in the kitchen.

• junk

• environment

• landfills

We shouldn't keep wild animals in a zoo. It's better to let them live in the _____ world.

• energy-efficient

• natural

• man-made

Solar power is a kind of ______ resources.

• man-made

• renewable

• harmful

Brian! ______ the speed. You're driving too fast.

• reduce

• reuse

• recycle