unit 3: locking back

Burying waste in ______ can lead to other environmental problems such as soll and air pollution.

• cardboard boxes

• containers

• recycling plants

• landfills

We all agreed _____ a plan to make our classroom greener.

• for

• in

• on

• of

We can ______ glass jars for storing cookies, jam, or nuts.

• reused

• reduce

• reuse

• waste

Billions of trees are cut ____ every year releasing carbon dioxide back into the air and contributing to climate change.

• up

• over

• out

• down

Choose the letter A,B,Cor D to indicate the word whose underlined part is pronounced differently from the other 3 words.

• ecotourism

• account

• cloud

• household