Open World B2 Unit 12 Obligation, Permission and Necessity
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You should the organiser to sign the document. SUPPOSED You are ... the document signed by the organizer
supposed to get
It's not necessary to dress up for the party. DON'T You ... for the party.
don't have to dress up
Children may attend the even provided that they are accompanied by an adult. ALLOWED Children .... the event provided that they are accompanied by an adult.
are allowed to attend
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