Put the verbs in brackets into the correct form.

1. If we (recycle) ________________ more, we (help) will help the Earth.

________can cause high blood pressure, heart problems, sleep disturbances, and hearing problems.

A. Air pollution B. Light pollution C. Water pollution D. Noise pollution

• A

• B

• C

• D

If rubbish is non-biodegradable, it________ forever.

A. exists B. will exist C. won’t exist D. doesn’t exist

• A

• B

• C

• D

FILL IN THE BLANK

Hundreds of d________ fish were found floating in the river near the factory.

FILL IN THE BLANK

U________ sewage can spread disease and contaminate drinking water sources.

Choose the word whose underlined part is pronounced differently from the others.

. A. disease B. dead C. treatment D. sneeze

• A

• D

• C

• B

Choose the word that needs correcting.

What will happen if the Earth stopped moving?

• will happen

• if

• stopped

• moving

If we recycle more household waste, there________ (be) less damage to the environment

• were

• is

• will be

• was

If we________ (not understand) environmental problems, we would not be able to doanything about them.

• doesn't understand

• do not understand

• did not understand

• will not understand

Water pollution can lead to the________ of aquatic plants and animals. (die)

• dead

• die

• died

• death