65、change 零錢(n.)換零錢(v.)

66、comfort v.& n 安慰;舒適，舒服

comfortable 舒服的，舒適的

67、have…in common 有共同之處

Although they are twins they have little in common.

68、communicate 傳播，交流

69、compare…to… 把…比作…

compare…with… 把…與…相比

Poets like comparing their lovers to red roses.

Compared with brain，computer still has some shortcomings.

70、complain of/about 抱怨

71、be made up of 由…組成 be composed of consist of

72、concentrate on 集中注意力于 be engaged in

73、as far as…be concerned 就…而言

As far as wages are concerned，I'm very dissatisfied with the present job.

Concerning=about 關于

74、contribute 捐獻 contribute to 有助于

Computers will contribute many conveniences to our work.

75、control out of control 失去控制 under 在控制之下

76、convenient 方便，便利的

77、convince 使相信/信服 convince…of…

I'm convinced(=I believe)that where there is a will，there is a way.

He was not convinced of his wife's guilty.

78、cope with deal with handle 處理，應付

79、at the cost of 以…為代價 He saved the drown child at the cost of his own life.

at the risk of 冒著…危險…

cost spend

The overcoat cost him $200.

He spent $200 on(in buying)the overcoat.