express regret for something that one has done wrong
You must apologize to people when you hurt them.
appointment
an agreement to meet someone at a specific time
I have to leave work early because I have an appointment with the doctor for a checkup.
book
to schedule; to make an appointment
It is important to book a hotel room to stay in before you go on holiday.
cancel
to decide or announce that (something already arranged etc) will not be done
Classes with fewer than 20 applicants will be canceled.
checkup
A check-up is a medical examination by your doctor or dentist to make sure that there is nothing wrong with your health.
I get a dental checkup at least once a year.
come by
to go to a place where someone is for a short time
Can you come by again in the morning tomorrow?
confirm
to make sure something is right by checking it again
You need to confirm whether you want to attend the party or not.
district
an area of a city which has some special quality
Most of the people who live in my district, work in agriculture.
editor
person in charge of publishing a periodical, a newscast, or a book series
Her work as the editor of a very large newspaper occupied most of her time.
work out
to exercise
I always feel so tired after I work out.