Modal Verbs_Obligation&Prohibition

We all wear uniforms in this school. We _______ wear a tie and suit.

• Must

• Mustn't

• Should

• Have to

My school is very nice, and it is not mandatory to wear a tie. So you _______ wear one.

• Must

• Mustn't

• Should

• Don't have to

I want to go to university, so I ________ get good grades.

• Should

• Have to

• Mustn't

Teachers and students ______ check their social media while they are at school. It is against the rules.

• Must

• Should

• Mustn't

• Have to

My teacher never gives me homework but if she does, I ______ do it.

Breakfast is the most important meal of the day, so you _____ skip it.

She _______ put the rubbish into the bin.

What does this picture mean?

• You should write on the table

• You mustn't write on the table

• You must write on the table

• You don't have to write on the table

What does this sign mean?

• You must use your phone

• You don't have to use your phone

• You have to use your phone

• You mustn't use your phone

What does this image mean?

• You can listen to the teacher

• You don't have to listen to the teacher

• You mustn't listen to the teacher

• You have to listen to the teacher