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Must, Have to and Should
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You __________ talk on your mobile when you're filling up with petrol
mustn't
Oops!
Okay!
A pilot __________ wear a uniform when he's at work.
has to or must
Oops!
Okay!
I __________ speak to my phone companu. My last bill was wrong.
have to or must
Oops!
Okay!
We __________ hurry. We have plenty of time.
don't have to
Oops!
Okay!
You __________ your phone in quiet zones.
mustn't
Oops!
Okay!
Do you think we __________ to text Dad to thell him we'll be late?
should
Oops!
Okay!
You __________ send text messages qhen you are driving.
mustn't
Oops!
Okay!
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