Studentswith_______problemsmayapplyforstudentloans.
Ifyouhaveanyproblemsduringyourstudyhere,pleasedonot_______tocallmeforhelp
Whenaspacecrafttravels,oneofthemajorproblemsisreentryintotheEarth’s_______.
Thisriverissobigthatitisimpossibletobuilda_______underitwithoutmoderntechnology.