Look up the etymology of two of the following idioms

Look up the etymology of two of the following idioms - 1) explain the origins and how/why it is used, 2) describe how you can use idioms to teach figurative/literal language.*Break the ice *A bird in the hand is worth two in the bush.*Make hay while the sun shines. *Back seat driver.*Throw in the towel. *Every cloud has a silver lining.*It's raining cats and dogs. *Hit the nail on the head.

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