In calculus. Joe is head and shoulders above his classmates.

　　27，be in the dark 蒙在鼓里

　　A: Do you have any idea what his notice is about?

　　B: I’m as in the dark as you are.

　　28，be stuck 卡住了

　　I can’t get this window open. It’s stuck.

　　29. bite off more than one can chew. 贪多嚼不烂

　　A: I hear you’re taking an advanced physics course this semester.

　　B: I think I’ve bitten off more than I can chew.

　　30. break new ground 有了新的突破

　　His architectural design broke new ground in the field.

　　31，benefit concert 慈善音乐会

　　We need to let everyone know about the benefit concert. but we don’t have much money for advertising.

　　32. busy signal 占线

　　I’ve been calling David for the past half hour. but I keep getting a busysignal.

　　33.between you and me 你我之间，保密

　　34，call for

　　A.打电话找

　　Tom just called for you.

　　B.预报

　　The forecast calls for heavy rain again tonight. Aren’t you glad we’ll be getting away from this for a week?

　　C.问

　　It’s probably in the new part of town. We’ll have to call for directions.

　　35. call it a day 就此结束

　　A: I’m really glad our club decides to raise money for the children’s hospital. and most of the people we’ve phoned seemed happy to contribute.

　　B: Yeah. I agree. Now we’ve gone through all the numbers on our list now.

　　so I guess we can call it a day.

　　36.cash the check 兑现支票

　　Have your sister cashed her paycheck?

　　37.clear off 收拾，整理

　　It’s about time we clear off the desk.

　　38.come down (雨，雪)下起来

　　The heavy rain is coming down. now.

　　39. come in first in the race 比赛第一名

　　Not only did Jill come in first in the race but she also had her best running time of the season.

　　40.come what may 不管怎样

　　We’ll pick you up tomorrow at eight. come what may.

　　41.cost somebody an arm and a leg

　　A: Did you see the diamond ring Bill gave to Linda?

　　B: I sure did. It must have cost him an arm and a leg.

　　42. cut it out 闭嘴

　　I told you to cut it out.

　　43.be cut out for 生来时做……的

　　Dr. Hamilton doesn’t feel Larry is cut out for the medical profession.

　　44.department chair 系主任

　　I didn’t write that memo to the department chair.

　　45.dirt cheap 非常便宜

　　A: You’ve already furnished your apartment?

　　B: I’ve found some used furniture that was dirt cheap.

　　46. do with 用…..凑合； do without 没有……也行

　　You can do with your girlfriend.

　　You can do without your girlfriend