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1、 Many of us have tried to lose and failed in the end.（weight）
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2、 The policeman gave us a serious (warn) about road safety.
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3、 Many farmers' crops were badly (affect) by the sudden heavy rain.
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4、 Nowadays, most people like using (electric) products in daily life.
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5、 With careful preparation, the school sports meeting went off (smooth).
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6、 The reporter will talk with several young (interview) this Friday.
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7、 Lots of students (download) this useful learning app already.
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8、 This new mobile phone is much (tiny) than the old one I used before.
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9、 The doctor asked me to watch my (weigh) every day.
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10、 Our English teacher often writes helpful (评论) on our homework.
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11、 The hospital offers different (治疗) for heart illnesses.
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12、 Local farmers suffered great losses after the terrible (洪水) last summer.
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13、 The little boy (被警告) not to swim alone in the deep river last week.
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14、 Many foreign (公司) choose to set up factories in this developing city.
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15、 Most schools now use d tools to make their classes more lively and interesting.
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16、 The scientist collected lots of valuable d for his space research.
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17、 There is always heavy t on this main road during rush hours.
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18、 This special s can help students organize their learning plans well.
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19、 This new medicine is an important b in medical science.
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20、 根据要求写出相应的单词。(1)、expert→(pl.)(2)、pay→(n.)(3)、treat→(n.)(4)、smooth→(adv.)(5)、weigh→(n.)(6)、social→(n.)(7)、effect→(v.)(8)、tiny→(同义词)(9)、positive→(opp.)(10)、novel→(n.指人)(11)、message→(pl.)(12)、basis→(adv.)