Then and Now: could and should

In the past, people ___________ use websites.

• could

• couldn't

In 1980, people ___________ buy books.

• could

• couldn't

In the past, people _____________ write letters.

• could

• couldn't

In 1980, people _________ buy encyclopedias.

• could

• couldn't

In the past, people ____________ use the internet.

• could

• couldn't

In the present, we ______ reuse plastic bags.

• should

• shouldn't

Nowadays, we __________use a lot of bags.

• should

• shouldn't

Nowadays, we ___________ turn off televisions and computers at night.

• should

• shouldn't

Nowadays, we __________ throw away glass bottles.

• should

• shouldn't

Now, we ___________ recycle cardboard.

• should

• shouldn't