C-9：cotton on 理解 A:Mary, could you help me with this problem? A：玛丽，能给我讲讲这道题吗？ B:Sure, Ah, our teacher has explained it in class, hasnt he? B：当然可以。啊，这道题老师上课不是讲过了吗？...

C-8：cool someones ardor 使某人的心凉半截 A:If you had followed your fathers suit, you would certainly cool your grandpas ardor. A:如果你像你父亲那样的话，你爷爷就会伤透了心。 B:I cant do that. I cant see eye...

C-7：cool ones heels 久等 A:Hurry up, or youll be late again. A：快点，不然你又要迟到了。 B:Im coming. B：来了。 A:You cant keep them cooling their heels each time. A：你不能每次都让他们空等。 B:Dont worry,...

C-6：close ones eyes to 拒绝注意 A:Our team is sure to win the match. A:我们队肯定会赢这场比赛的。 B:Yeah, but we cant close our eyes to the shortcomings of our team. B：是啊，可我们也不能看不到我们队的缺点...

C-5：chicken out 由于胆怯而收兵 A:Have you made your decision? But its really dagerous. A:你已经决定了吗？但这确实很危险。 B:Whatever you say, I wont chicken out on things Im determined to do. B：不管你说什么，...

C-4：chew the fat (with) 闲聊 A:The teacher was too hard on his students, especially on the boys. A：老师对学生要求太严了，尤其对男生。 B:Yeah, I agree, But some boys were chewing the fat in class. B:是的，我同意。...

C-3：chalk talk 边板书边讲话 A:What is Mary doing with her friends? A:玛丽和她的小伙伴们在干吗？ B:Shes giving them a chalk talk of a mathematies problem. B：她正连写带画地给他们讲一道数学题呢。 A:Shes...

C-2：catch-22 左右为难之境 A:Why not continue your schooling? Youve to get a diploma to earn more money. A:为什么不继续上学呢？要赚更多的钱就要有文凭。 B:But I need more money before I go to school. B:但是我现...

C-1: catch up with 赶上 A:I really want to give up my studies. A:我真想放弃我的学业了。 B:What? How can you say so? B:什么？你怎么能这么说呢？ A:I cant catch up with my classmates, I cant follow the teacher in class...

B-36：burn the midnight oil 熬夜工作 A：You look sleepy. Have you been burning the midnight oil recently? A: 你看上去很困。最近是不是熬夜用功呢？ B: Yes, Ive been preparing for my finals. B：是啊。我一直在准备...