Withoutapropereducation,peoplecould_______allkindsofcrimes.
ProfessorSmithisalsothe_______oftheinternationalprogramoffice.Ifyouhaveanyproblemwhenyoustudyhere,youmaygotohimforhelp.
Withoutapropereducation,peoplecould_______allkindsofcrimes.
Severalloudspeakersare_______fromtheceilingandwecanhearthespeakerveryclearly.