| 1 | check out 相当于find out |
| 2 | checking account |
| 3 | check-up |
| 4 | check with |
| 5 | cheer up |
| 6 | chemistry lab |
| 7 | chocolate bar |
| 8 | chop down |
| 9 | circulation desk |
| 10 | Civil War |
| 11 | class president |
| 12 | classical music |
| 13 | class schedule |
| 1 | classical station |
| 2 | classified ads |
| 3 | clean out |
| 4 | clean up |
| 5 | clear off |
| 6 | clear up |
| 7 | close to |
| 8 | closing date |
| 9 | coffee break |
| 10 | collect call |
| 11 | come a long way |
| 12 | come along |
| 1 | come around to |
| 2 | come back |
| 3 | come by |
| 4 | come down |
| 5 | come in |
| 6 | come in handy |
| 7 | come into + money/ a fortune/ a legacy |
| 8 | come in first in the race |
| 9 | come in handy |
| 10 | come out |
