careful - trying very hard to avoid doing anything wrong or to avoid damaging or losing something, careless - not paying enough attention to what you are doing, so that you make mistakes, damage things and so on, bald - having little or no hair on your head, be in your early twenties - to be aged between 20 and 24, confident - sure that something will happen in the way that you want or expect, miserable - extremely unhappy, for example because you feel lonely, cold, or badly treated, rude - speaking or behaving in a way that is not polite and is likely to offend or annoy people, polite - behaving in a way that is not rude and shows that you do not only think about yourself ,

Prepare 4 Unit 1 Ex 2,4,5

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