WorldBookDayisacelebrationofallthingswonderfulaboutbook...
问题详情：WorldBookDayisacelebrationofallthingswonderfulaboutbooksforallages,withauthorevents,schoolfancy-dressparadesanda￡1booktoken（购书券）giventoallschoolchildrenunder18.Itisayearlyeventon23rdApril,orga...