The_______workcontinuedformorethanaweekbuttherewasstillnosignofthemissingboy.
ProfessorSmithisalsothe_______oftheinternationalprogramoffice.Ifyouhaveanyproblemwhenyoustudyhere,youmaygotohimforhelp.
Wewon’tallowanyforeigncountryto_______inourinternalaffairs.
Manykindsofanimalsarebelievedtohave_________fromtheearth
Pinetreesareusuallybelievedto_______coldweather.
Freemedicalserviceis_______tonearlyallthecollegestudentsinChina.