1call for an appointment
2call it a day
3call off
4call on sb.
5camping trip
6campus security office
7can help
8can't put sth. Down
9care for
10carry on with
1carry out
2cash a check
3catch on
4catch one's breath
5catch one's eye
6catch up on
7catch the flight
8catch up with
9change one's mind
10check out