The_______workcontinuedformorethanaweekbuttherewasstillnosignofthemissingboy.
A、researchAsateacher,youshouldnot_______thestudentsfromaskingquestionsinclass.
ProfessorSmithisalsothe_______oftheinternationalprogramoffice.Ifyouhaveanyproblemwhenyoustudyhere,youmaygotohimforhelp.
Theengineersinthislabspentseveralweeks_______theirplansforthenewbicycle.
Healwayshasalotof_______ideasinhismind,andsometimeswedonotevenknowwhatheisthindingabout.
Wecannottrusthimanymorebecauseheoften________hisduty.
