Lyingundertheskull,thehumanbraincontainsanaverageoftenbillionnervecellscalled______.
RobertFrostisgenerallyconsideredaregionalpoetwhosesubjectmattersmainlyfocusonthelandscapeandpeoplein().
Iparticularlywanttopaytribute,notonlytothosewhopreparedthemagnificentdinner,butalsotothosewhohaveprovidedthesplendidmusic.（）
ThechildhoodofTomSawyerandHuckFinnintheMississippiisarecordofavanishedwayoflifeinthe()Mississippivalley
Searle'sclassificationofillocutionaryactsisbasedontheclassificationofperformativeverbs.
