SomestatesintheUnitedStates_______peopletocarryguns.
A、applyThisboywas_______forwhathehaddoneintheclass.
Pine trees are usually believed to _______ cold weather.
After working for twenty hours without any rest, the doctors were _______.
Heworksinouruniversityasavisiting_______,notasaformalfacultymember.
ProfessorSmithisalsothe_______oftheinternationalprogramoffice.Ifyouhaveanyproblemwhenyoustudyhere,youmaygotohimforhelp.