30, break new ground 有了新的突破 (来源：英语杂志 http://www.EnglishCN.com)
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 busy signal.
33,between you and me 你我之间，保密
Tom just called for you.
The forecast calls for heavy rain again tonight. Aren’t you glad we’ll be getting away from this for a week?
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
47, dog tired 特别累，同义：run down; worn out; out of steam
I’m dog tired these days. I’m working on seven articles.
48, down jacket 羽绒服
49，drive somebody up the wall 让某人发疯；同义：drive somebody out of one’s mind
The sound of all that raffic is driving me out of my mind.
50, fall back on 依赖
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.
51, fill a prescription 按处方抓药
Would you please fill this prescription for me?
52, fill in for 代替；同义：fill one’s place(position, shoes); take the place of; take over Say, Dave, can you fill in for me tonight at the restaurant? I’d like to go out of town.
53,food for thought 令人思考的东西；同义：thought-provoking
There is a lot food for thought in what he had to say.
54,for nothing 免费
To pay to see that movie would be foolish, when you can see it on TV for nothing.
55,from top to bottom 从上到下
A: Maybe you lost your wallet in this room.
B: I’ve searched it from top to bottom..
56, get of on the wrong foot 开始事情就做错了
I got off on the wrong foot, and I don’t have any idea which way to turn now.
57,get a lot out of something 从……学到很多
The training program was difficult, but she got a lot out of it.
58, get at 想说
Do you understand what I’m getting at?
59, get away with 对…..摆脱惩罚
A: Did you know that Bob is leaving for home tonight? He isn’t planning to take his final exams.
B: He can’t get away with that