Complete the sentences with the correct modal verb!

We ______ bring a dog in here

• can

• can't

• must

• mustn't

Answer explanation

The correct choice is 'mustn't' because it indicates that bringing a dog in is prohibited or not allowed.

We ______ pay in cash. We _____ pay by credit card.

• can

• can't

• must

• mustn't

Answer explanation

The correct choices are 'must' for the first blank to indicate obligation and 'mustn't' for the second blank to indicate prohibition.

We _____ sit at this table. It's reserved

• can

• can't

• must

• mustn't

Answer explanation

The correct choice is 'can't' because the sentence indicates that sitting at the table is not allowed as it is reserved.

We _____ use our cellphones here.

• can

• can't

• must

• mustn't

Answer explanation

The correct choice is 'mustn't' because it indicates that we are not allowed to use our cellphones here.

We _____ use wifi here.

• can

• can't

• must

• mustn't

Answer explanation

The correct choice is 'can' as it indicates the ability to use wifi in this location.