Freemedicalserviceis_______tonearlyallthecollegestudentsinChina.
Allthememoriesofhischildhoodhad_______fromhismindbythetimehewas65.
The _______ work continued for more than a week but there was still no sign of the missing boy.
The engineers in this lab spent several weeks _______their plans for the new bicycle.
He _______ to study harder in the future so that he could have more opportunities to find a better job.
Whenaspacecrafttravels,oneofthemajorproblemsisreentryintotheEarth’s_______.