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. 貪多嚼不爛

　　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 慈善音樂會

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

　　32. busy signal 占線

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

　　33.between you and me 你我之間，保密

　　34，call for

　　A.打電話找

　　Tom just called for you.

　　B.預報

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

　　C.問

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

　　35. call it a day 就此結束

　　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 兌現支票

　　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)下起來

　　The heavy rain is coming down. now.

　　39. come in first in the race 比賽第一名

　　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 不管怎樣

　　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 閉嘴

　　I told you to cut it out.

　　43.be cut out for 生來時做……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…..湊合; do without 沒有……也行

　　You can do with your girlfriend.

　　You can do without your girlfriend

　　47. dog tired 特別累，同義：run down; worn out; out of steam

　　I’m dog tired these days. I’m working on seven articles.

　　48. down jacket 羽絨服

　　49，drive somebody up the wall 讓某人發瘋;同義：drive somebody out of one’s mind

　　The sound of all that raffic is driving me out of my mind.

　　50. fall back on 依賴

　　A: Were you able to understand that French novel without any help from the teacher?

　　B: I did pretty well. but I had to fall back on my dictionary occasionally.