6、,或引起他们的好奇心等等,如: a. Tomisagoodstudent,hehasneverbeenlateforschool.But,today,heislate.Whathappened? b. UncleJohnhasamagicbook,withthisbook,hehasstrongmagic.But,thebookismissing.Whostolethebook? c. Somebodywantstobeateacher,somebodywantstobeadoctor,howabo