The rain turned to hail so we had to take cover in a shop door way. During the storm we took cover in a hay barn. -- past tense
That plane is going to drop a bomb, so take cover.
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.
The more honest a person is, the more he bears the brunt. This is an idiom stating the ordinary man.
The restaurant's service last night was noticeably below par.
"Hit the books" is a sentence.
You really have a chip on your shoulder. Don't get a chip on your shoulder over such a little thing.
I had to drop that project like a hot potato when I found out about all the issues with it.
"Eat, drink, and be merry" IS a sentence.
He told me I had won, but I thought he was pulling my leg.
Leaders like her are a dime a dozen.
Yes: "Beauty is in the eye of the beholder."
keep your chin up!
This is an example of a sentence using the word breakfast.