revision 7

Air ____ is a serious problem in big cities.

• deforestation

• pollution

• endangered

• plastic

• organic

We can plant trees to help reduce _____.

• deforestation

• pollution

• endangered

• plastic

• organic

Use paper bags and cloth bags to reduce _____ pollution

• deforestation

• pollution

• endangered

• plastic

• organic

Growing _____fruit and vegetables can save the environment.

• deforestation

• pollution

• endangered

• plastic

• organic

We need to protect the habitats of ______ animals.

• deforestation

• pollution

• endangered

• plastic

• organic

1. Students ....... works of art.

• did

• created

2. Ted had to ..... the tents.

• pick up

• set up

3. James ..... a clean-up day last month.

• organized

• started

4. They ...... their own fruit.

• built

• grow

5. Help me ...... the fence

• repair

• clear