English Idioms About “Nature”
Idiom: Add fuel to the fire
Meaning: (Also add fuel to the flames) to make a problem worse; to say or do something that makes a bad situation worse.
Example: Don’t add fuel to the fire by laughing at him. He is furious about what you have already done

English Idioms About “Money”
Idiom: Money for jam
Meaning: (Also be money for old rope) said about a job when it is an easy way of earning money.
Example: Selling ice-cream is money for jam when it is very hot.

English Idioms About “Health”
Idiom: Just what the doctor ordered
Meaning: The idiom just what the doctor ordered means exactly what is required or wanted.
Example: Alan: Orange juice? Greg: Thanks! Orange juice is just what the doctor ordered.