You should go to bed early. - You have to wake up early tomorrow., Tom has been working all day. - He must be tired., You shouldn't eat too much chocolate. - Otherwise your stomach will hurt., He needn't walk the dog. - His sister has already done it., We ought to be able to carry the chair. - It's not too heavy., Pay attention to the sign. - It says you mustn't take photos in the museum., I don't have to go to work tomorrow. - It is a holiday., You ought to visit your grandparents more often. - They enjoy seeing you., David's birthday party is a surpirse. - You mustn't tell him about it., The announcement is played at a low volume. - You must listen carefully.,

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