Obligation and prohibition | Baamboozle - Baamboozle

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We (don't have to / mustn't) hurry. We have plenty of time.

We (don't have to) hurry. We have plenty of time.

I (have to / must) speak to my phone company. My last bill was wrong.

I (have to or must) speak to my phone company. My last bill was wrong.

A pilot (has to / must) wear a uniform when he's at work?

A pilot (has to) wear a uniform when he's at work.

When I was at school we (had to / must) wear a horrible time.

When I was at school we (had to) wear a horrible time.

You (don't have to / mustn't) use your phone in quiet zones.

You (mustn't) use your phone in quiet zones.

You (should / must) visit the Pyramids when you're in Egypt.

You (should or must) visit the Pyramids when you're in Egypt.

Do you think we (should / can) text Dad to tell him we'll be late?

Do you think we (should) text Dad to tell him we'll be late?

You (don't have to / mustn't) send text messages when you are driving?

You (mustn't) send text messages when you are driving?

You (shouldn't / don't have to) walk on the grass. They've just planted flowers there.

You (shouldn't) walk on the grass. They've just planted flowers there.