1.Those second-hand pianos are selling like hot cakes, if you want one, youd better buy one now before theyre all gone. sell like hot cakes=sell very well or very quickly .
2.Whenever I have to make a speech I get butterflies in my stomach. get butterflies in ones stomach=get nervous来源：考试大
3 He would do anything for his daughter. She was the apple of his eye. be the apple of ones eye=be very precious to sb. 来源：考试大
4 Lend me,please,Tom,Im broke at the moment. be broke=doesnt have any money.
5 The accident was caused by a taxi driver jumping the green light. jump the green light=doesnt wait for the traffic lights to change to green
6.You didnt think I was serious, did you, Joe! It was a joke! I was pulling your leg, thats all. pull ones leg=tease someone,逗某人玩来源：考试大
7 Because the owner wanted a quick sale, the painting went for a song-only. If something "goes for a song", it is sold very cheaply .来源：考试大
8 There was a shortage of food. so you had to pay through the nose for what you could find. To "pay through the nose " for something is to pay far more for something than it is really worth .
9 If he finds out what you did with the companys money, hell hit the roof. hit the roof=get very angry 来源：考试大
10 The sky got very dark and soon the rain began to bucket down. bucket down = rain very heavily 来源：考试大
11 They all chip in for the benefit of Simpsons widow and little child. chip in=contribute money捐献来源：考试大
12.He usually buys his clothes off the peg. Its cheaper than going to a dressmaker. Off the peg clothes =成衣
13 Now stop beating about the bush and tell me what happened! beat about the bush=avoid saying directly what you mean 来源：考试大
14 I really must go and lie down for a while .Ive got a splitting headache. Splitting headache=painful headache