Unit 30: A healthy environment

If we save water, the rivers ________ cleaner.

• are
• will stay

• stayed

• are staying

Which problem can smog cause?

• Increased agricultural yield.
• Improved air quality.
• Make water quality better.

• Health issues.

The world ________ (be) a better place if everyone helps the environment.

• be

• are

• was

• will be

If we use less plastic, what will happen to the oceans?

• The oceans will become more polluted.
• Marine life will thrive with more plastic.
• The oceans will become cleaner and healthier.
• The temperature of the oceans will increase.

If it snows, the streets ________ (become) very slippery.

• stay the same
• will become

• became

• becomes

What will happen if we cut down all the forests?

• There will be more shade.

• Animals will lose their homes.

• Nothing

• The air will be cleaner.

I hope the rain ________(stop) tomorrow so we can go hiking.

• stopsing
• stops
• stoped
• stopping

If we don’t stop global warming, what will happen?

• The Earth’s temperature will rise.

• The seasons will stay the same.

• There will be no changes..

• The planet will cool down.

The mountains ________ (look) beautiful if the snow melts slowly.

• look beautiful
• looked beautiful
• are looking beautiful
• will look

If the weather gets colder, we ________ (turn) the heater.

• turned

• will turn on

• turn down
• turn up