Tom,Peter,LucyandLilyarebrotherandsister.Idon'tknowhowoldeachofthemis.Ionlyknowoneofthemis16,oneofthemis14,oneoftheboysis12andoneofthegirlsis15,andIalsoknowPeterisolderthanLucy.ButLilyisn't.
SoLucyis_______,Lilyis________,Peteris________,andTomis_______.
答案:SoLucyis15,Lilyis14,Peteris16,andTomis12.