An early meaning of "crack" included boasting, bragging, and talking big. "Not all it's cracked up to be" refers to this meaning. It's not used in the literal sense of a nut being cracked or a block having a crack in it.
It made me laugh very much.
It was a custom to plant daisies over the grave of a loved one.
Palestinian and Persian
food
Meaning he will help you out.
Origin "up a storm"
It made me laugh very much.
It's an alternative way of saying "What's up?"
Each idiom has its own origins - you'll have to look up the etymology of every one separately.
To be exposed
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It was a custom to plant daisies over the grave of a loved one.
No
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affrica (iraq
To hope for the best
It is just an idiom and has no history.