C (来源：英语麦当劳－英语杂志 http://www.EnglishCN.com)

call a spade a spade 直言不讳

call it a day 今天到此为止

call somebody names 骂人

A candle lights others and consumes itself. 蜡烛照亮了别人， 毁灭了自己。

Can't have it both ways 不能兼而有之

cannot make a silk purse out of a sow's ear 母猪耳朵做不出丝钱袋

cannot say bo to a goose 胆小如鼠

can't see the wood for the trees 只见树木不见森林

a card up one's sleeve 王牌，绝招

Care and diligence bring luck. 谨慎勤奋，带来好运。

Care killed the cat 忧虑缠身

carry coal to Newcastle 徒劳无益；白费力气

cast sheep's eye 送秋播，以目传情

cast pearls before swine 明珠暗投

castle in the air 空中楼阁

The cat and dog may kiss, yet are none the better friends. 猫狗可以相吻，但不会成为好友。

The cat shuts its eyes when stealing creams. 猫偷吃奶油时总是闭着眼睛。

A cat has nine lives. 猫有九条命。

A cat in gloves catches no mice. 戴手套的猫抓不住老鼠。

A cat may look at the king. 猫有权看国王

The cat is out of the bag. 泄露了秘密；走漏了风声

cat's paw 为他人"火种取栗"的人

a cat-and-dog life 争争吵吵的日子

catch someone napping 乘人不备

catch someone red-handed 当场抓获

Caution is the parent of safety. 谨慎为安全之本。

Chalk it up 公布于众；记在帐上

The child is father of the man. 从小看大，三岁看老。

Children and drunk people speak the truth. 小孩和醉汉说的是真话。

Choose a wife by your ear rather than by your eye. 选择妻子最好用耳不用眼。

Choose au author as you choose a friend. 择书如择友

clean hands. 清正廉洁

clear the air 清除误会；清除隔阂

cold comfort 不起作用的安慰

cold shoulder 冷淡对待

Command your men and do it yourself. 指挥别人就的以身作则。

Confession is the first step to repentance. 悔罪必先认罪。

Cool one's heel 坐冷板凳，苦等

come a long way 有了很大的进展

come clean 全盘招供

come in handy 用得上

come thick an fast 大批涌来

compare notes 交流思想

A creaking door hangs long. 旧门久用，病夫命长。

Crocodile's tears 鳄鱼的眼泪；假慈悲

The cross on the breast, and the devil in the heart. 胸前十字架，心里怀鬼胎。

Cross one's fingers 求上帝保佑

cross one's mind 偶然想到

cross swords with someone 交锋；争论

cry one's eyes out 悲痛欲绝，大哭失声

cry over spilt milk 牛奶一处，后悔无疑

curtain lecture 枕边训导

cut corners 走捷径，超近路

cut a good figure 给人好的印象

cut no ice 不起作用

cut one's coat according to one's cloth 量入为出，看布裁衣

cut and run 慌忙逃走

cut a long story short 长话短说

cut both ways 两方面都起作用

cut someone short 打断别人的话

cut things fine 算得很精确

cut somebody to the quick 戳到某人的痛处