What a ripoff! The new car I bought doesn‘t work!
2.rock the boat 找麻煩
Don‘t rock the boat! Things are fine just the way they are.
3.blow it 搞砸了，弄壞了
I blew it on that last exam.
4.in hot water 有麻煩
He is in hot water with his girlfriend recently.
5.put one‘s foot in one‘s mouth 禍從口出
Wally is always saying such stupid thing. He has a real talent for
putting his foot in his mouth.