Keep is a small word and one of the core words for reference. Many of its meanings can be divided into two categories, one is a copula and the other is a behavioral verb. As a state copula, it is followed by adjectives, adverbs, nouns and prepositions, which candidates must be familiar with. A summary of the application of "phrase collocation" in extended database

Stay healthy (adjective)

Stay away from sb. (adverb)

I think we should remain friends. (noun)

Keep in touch with ...

As a behavioral verb, it has many meanings, but we should remember its original meaning, that is,' keep, keep and preserve', so it is extended to' manage, care and feed, observe and maintain, feed, celebrate and maintain a certain state' and so on. Among the many extended meanings, we should focus on its last meaning, that is,' keep in a certain state', followed by adjectives.

Open your eyes (adjective)

I'm sorry to keep you up so late. (adverb)

This makes her a student all the time. (noun)

Stay out of my business. (adverb)

The fire is burning (now) close your eyes (too much)

Of course, the most troublesome thing is its collocation ability, that is, many idioms it forms. Let's sum up this question (in alphabetical order)