You____________ forget to pay the rent tomorrow. The landlord is ...

★ Modal Auxiliary

You____________ forget to pay the rent tomorrow. The landlord is very strict about paying on time.

A. don’t have to

B. couldn’t

C. mustn’t

Preview next quiz:

Choose the correct option according to the modal verb: “YOU MUST NOT SAY BAD WORDS!”.

A. Obligation

B. Possibility

C. Advice

D. Permission