Thenewmachine的精選

問題詳情： Thenewmachine________lastmonthisverypopularnow.     A.invents  B.toinvent  C.invented D.wasinvented【回答】C知識點：動詞時態題型：選擇題...

問題詳情： Thenewmachine,ifproperly,willworkforatleasttenyears. A.used B.use    C.using D.beingused【回答】A知識點：非謂語動詞題型：選擇題...