Our school had about 20 notebook computers but only one-forth _____used regularly. Now we have 50 working all day long.  

     A. is                B. are                   C. was      D. were

D 考查主謂語(yǔ)的一致性原則和省略句式。依據(jù)one-forth （of the computers）可知。 

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參考詞匯：costume 服裝 deserve 值得

注意：1. 文章的標(biāo)題和開頭已給出（不計(jì)詞數(shù)）。

Star Student of the Week

Yang Huan has been awarded the title of “Star Students of the Week” for what she did for our school.                                                                            

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