31.ThecollegestudentsinChinaare_______fromsmokingoncampusbecausethiswilldothemnogood.
32.ProfessorSmithisalsothe_______oftheinternationalprogramoffice.Ifyouhaveanyproblemwhenyoustudyhere,youmaygotohimforhelp.
33.Wewon’tallowanyforeigncountryto_______inourinternalaffairs.
34.Wecannot_______allthemagazinestogether.
35.Whathesaidinthemeeting_______everybodypresent.
36.Somelazymenwouldrather_______thanwork.
37.Thisboywas_______forwhathehaddoneintheclass.
38.SomestatesintheUnitedStates_______peopletocarryguns.
39.Carelessnessmadehimfallinhisjob_______.
40.Sometimesitisverydifficultto_______someoftheEnglishwords.Eventhenativespeakercannothelp.