should / should not (shouldn't)

We _____ turn down the air-con.

• should

• shouldn't

We _____ turn off the lights.

• should

• should not

We _____ have showers.

• should

• shouldn't

We _____ bring our own shopping bags.

• should

• should not

We _____ recycle cans and plastic bags.

• should

• shouldn't

We _____ leave the lights on.

• should

• should not

We _____ leave the taps on.

• should

• shouldn't

We _____ have baths.

• should

• should not

We _____ use a lot of disposable products.

• should

• shouldn't

We _____ throw away a lot of used paper.

• should

• should not