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Unit 3 Inventors and inventions Ⅰ.阅读下面材料，在空白处填入适当的内容(不多于3个单词)或括号内单词的正确形式。 Peter：Cathy，look at those strangelydressed kids at our neighbor's door.What are they up to? Cathy：Oh，they are going trickortreating.Do you know what the __1__ is today? Peter：October 31，why? Cathy：The last day of October is a holiday for kids.We call it Halloween. Peter：Ah，Halloween.I've heard of it before，but I don't know how it is __2__(celebrate)． Cathy：It is supposed to be a night __3__ all devils，ghosts，and witches are out.Children celebrate it by making jacko'lanterns. Peter：Pardon? Cathy：Those are lanterns __4__(make) out of fresh pumpkins with a candle __5__(burn) inside. Peter：Today I saw some in the streets with carved faces on __6__.Are they all made by children? Cathy：Parents usually help them and they are available in __7__(vary) shops，too.Have you been to some shops recently? Peter：No.I have been busy with my papers. Cathy：If you had gone，you __8__ have seen all sorts of scarecrows and witches riding brooms and holding black cats. Peter：Fascinating！Are you going to any Halloween party tonight，Cathy？__9__ you go，take me with you. | 
