UNIT 11: LOOKING BACK

If they (build) ___an airport here, it (be)___very noisy.

• build- will be

• build- be

• will build- is

• will build- will be

People (save)____the environment if they (reuse)_____ old items.

• will save- reuse

• save- will reuse

• will save- will reuse

• save- reuse

If we (grow) trees, our school (be) greener.

• grow- will be

• will grow- will be

• grow- is

• grow- will is

If we (not have) enough food, we (be) hungry.

• don't have- will be

• have- be

• have- will be

• will have- will be

If we (be) hungry, we (be) tired.

• are-will be

• are-be

• will be- will be

• are- are

We walk or cycle. We are healthy.

We use the car all the time. We make the air dirty.

You reuse paper. You save trees.

You make noise. Your sister doesn't sleep.

I see a used bottle on the road. I put it in the bin.