destination c1 c2 unit 4 IDIOMS

A leopard can't change its spots

used for saying that someone will never change their behaviour or character

all mod cons

all modern conveniences, the machines and pieces of equipment in your house that make life easy and comfortable

break the mould

change a situation by doing something that is very different from what most people usually do or have done in the past

change your tune

change your opinion or attitude

have a change of heart

change your opinion about something or decide not to do something you were planning to do

know sth inside out

be very familiar with

reinvent the wheel

waste time and effort trying to do something that someone else has already done well

stick to your guns

refuse to change what you are saying or doing despite the opposition or criticism of other people

the tools of the trade

the skills and equipment that you need in order to do your job

turn over a new leaf

change your life by starting to be a better person or stopping a bad habit