Fill in the Blanks (Reading) (Core)

A man called a walk-in clinic to ask whether he needed an appointment to see a doctor about a persistent cough. The receptionist explained that the clinic does not require a —bookingwarrantyitineraryinvoice, but patients are seen on a first-come, first-served basis, so wait times can vary. She recommended he arrive early, since the busiest —periodswarrantiesinvoicesitineraries are usually right after the clinic opens and again in the early evening. He was also asked to bring a valid health card, since visits cannot be —processedrenovatedtranslatedpostponed without one. The receptionist mentioned that if his symptoms got worse before his visit, he should consider going to the emergency room —insteadoverduefluentreversible, rather than waiting for a walk-in slot.