1.Iwasso______intoday'shistorylesson.Ididn'tunderstandathing.(CET-4,2004.6)2.Thewordsofhisoldteacherslefta______impressiononhismind.Heisstillinfluencedbythem.(CET-4,2000.1)3.Theneighborhoodboysliketoplaybasketballon

　　1.Iwasso______intoday'shistorylesson.Ididn'tunderstandathing.(CET-4,2004.6)

　　2.Thewordsofhisoldteacherslefta______impressiononhismind.Heisstillinfluencedbythem.(CET-4,2000.1)

　　3.Theneighborhoodboysliketoplaybasketballonthat______lot.(CET-4,2002.6)

　　4.Heisquitesurethatit's______impossibleforhimtofulfillthetaskwithintwodays.(CET-4,2002.1)

　　5.Inordertomakethingsconvenientforthepeople,thedepartmentisplanningtosetupsome______shopsintheresidentialarea.(CET-4,2004.6)

　　[A]lively[B]amused[C]confused[D]absolutely

　　[E]mobile[F]vacant[G]lasting[H]vain