They were late for the meeting because they ______ wait for the delayed train yesterday.

• have to

• must

• had to

• should

We ______ buy tickets in advance because entry to the museum is free on Sundays.

• must

• mustn't

• have to

• don't have to

You ______ take photos inside the gallery. It is against the rules.

• should

• don't have to

• mustn't

• must

Children ______ drink too many sugary drinks because they can damage their teeth.

• must

• mustn't

• shouldn't

• have to

She is coughing a lot. She ______ see a doctor as soon as possible.

• mustn't

• doesn't have to

• must

• had to

On weekends, we ______ wear uniforms. Casual clothes are allowed at our language school.

• don't have to

• shouldn't

• didn't have to

• mustn't

We have an exam tomorrow, so you ______ spend the evening playing video games.

• shouldn't

• should

• have to

• don't have to

We ______ wear a helmet when riding a motorbike in Vietnam. It's the law.

• have to

• mustn't

• shouldn't

• had to

Tomorrow is a public holiday, so you ______ wake up early for school.

• mustn't

• don't have to

• shouldn't

• didn't have to

You look very tired. You ______ take a short rest before continuing your homework.

• mustn't

• should

• don't have to

• has to