SU3U6 Modals of obligation and permission

We ... buy tickets for the concert as it is free.

• have to

• don't have to

• must

• mustn't

You _________________ wear seat belt.

• Can

• Can´t

• Have to

• Don´t have to

We __ attend all the lessons. We can choose.

• don't have to

• mustn't

• can't

• must

WHICH SENTENCE IS CORRECT?

• I MUST TO STUDY EVERYDAY.

• I MUST STUDY EVERYDAY.

• I MUSTED STUDY EVERYDAY.

Dear students: it is an obligation to wear your uniform correctly, so you ____ fit your shirt.

• Must

• Should

• Should have

• Have to

I __________________ get good grades so I can go to university.

• can't

• have to

• don't have to

• must

At my school, we _______________ wear our uniform every day. It's an obligation.

• can't

• shouldn't

• should

• have to

Teachers _______________ check their social networks while they are teaching. They will get in trouble!

• Must

• are allowed to

• don't have to

• Must not

You ___ come to the meeting but it would help us all if you’re there.

• mustn't

• don't have to

• can't

• must

__ pay in advance?

• Do we must

• Do we to must

• Must we

• Do we have to