41.cost somebody an arm and a leg

A: Did you see the diamond ring Bill gave toLinda?

B: I sure did. It must have cost him an arm anda 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 themedical 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