Thisriverissobigthatitisimpossibletobuilda_______underitwithoutmoderntechnology.
Sheisalready16yearsold.Butshe_______asifshewerestillalittlegirl.
Afterworkingfortwentyhourswithoutanyrest,thedoctorswere_______.
Heworksinouruniversityasavisiting_______,notasaformalfacultymember.
IntheUnitedStates,theforeignpolicyisdecidedbythe________government,notbyeachstate.