This is not an idiom - it means exactly what it says. You should stay fit and healthy.
I think it means that that person agrees with that others persons idiom and that it fit that question that the teacher or whoever asked that question.
Stay calm
"Keep your hair on" could refer to the Old West, when Indians might scalp you if you were not watchful. I've never heard it said as "keep your hair on" though.I suppose the idiom 'keep your hair on' means that if when a person is stressed the likelyhood that you could lose your hair or even pull it out hence keep it on and keep yourself calmThis may be a mixed idiom - more common is "keep your hat on" which is also means keep calm and don't "blow your top"."Keep your hair on" is advice telling someone to keep calm and not to over-react or get angry.
no it's not it's an idiom
It is not an idiom, it means your nose is itching.
I think it means that that person agrees with that others persons idiom and that it fit that question that the teacher or whoever asked that question.
To keep struggling and not give up.
Stay calm
Keep bothering someone.
That's not an idiom. It means just what it looks like -- something is fit for you to eat.
It means " keep calm, don't get worked up"
Keep an idea in ones head to act on it later.
This is not an idiom. When you compare two things by saying one is the other, it is a metaphor. It means that however you keep your house reflects your personality, and vice versa.
There isn't an idiom called "eggs basket." Perhaps you are thinking of the old proverb that says "don't keep your eggs in one basket."
The image is of you pointing an eye at something or someone. It means to watch carefully.
It means to be on the lookout for a street by the name of Connecticut.
The idiom "keep an eye out for" refers to watching for something or someone. An example of a sentence using the idiom would be: Jeff should be arriving soon, so keep an eye out for him.