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1.Heis___an_uglyman.2.Ihave____an_orange.3.Thereis__an__elephantinthezoo.4.Youare__a__goodstudent.5.Pleasetake__an__umbrella.6.Iam__a__student.7.Thisis__a_newbook.8.Ihave__a_usefulbook.9.Heteachesmathin__a_university.10.Ibought_an__MP3yesterday.11.Heis__an__honestboy.12.Igot__an_X-ray(x射线透视)。13.Myfatherboughtme__an_iphone5.14.Thereis__a_“u”intheword“hour”,thereis__a__“h”.15.Yaomingis_a___NBAbasketballplayer.16.Tomhad_an___unusualexperience.17.Thisis__an_egg.18.Ispent__an_hourdoingmyhomework