Quiz on Must and Mustn't Usage

I don’t want anyone to know about our plan. You ___ tell anyone.

• must

• mustn't

Richard ___ to wear a suit to work, but he usually does.

• has

• doesn't have

There’s a lift in the building, so we ___ climb the stairs.

• must

• don't have to

I promised Kate I’d call her tomorrow. I ___ forget.

• mustn't

• have to

I’m not very busy. I have a few things to do, but I ___ do them now.

• must

• don't have to

Sophie likes weekends because she ___ get up early.

• must

• doesn't have to

You ___ be a good player to enjoy a game of tennis.

• must

• don't have to

You should keep trying to find a job. You ___ give up.

• mustn't

• have to

I ___ eat too much. I’m supposed to be on a diet.

• mustn't

• have to

We have plenty of time before our flight. We ___ check in yet.

• mustn't

• don't have to