to move or work quickly enough to attain the same progress as others
Since the student had been out of town for nearly a week, he was forced to catch up with the work of the other classmates.

to state or show whether or not something is true
You need to confirm whether you want to attend the party or not.

in a manner that is clear and easily understood
I definitely do not want to work on a maggot farm.

a sudden happening that calls for an immeidate action
In an emergency, try to remain calm.

to fill a time, a space, or an area
All of the seats on the subway were occupied by people.

a person receiving or waiting for medical care
All patients who stay at the hospital must wear gowns.

to agree to a new time and later date for something to happen
Because of the snow storm, we had to reschedule the meeting.

being more than two but not a large amount
I've received several complaints about all the noise coming from your apartment.

to follow something, usually an animal, by the marks or signs it left behind while moving
The analyst tracked the sales reports for the company.

to desire to know something
Patty wonders if she can be a rock star.