Question

you must abide _____ the rules of the school ( by /on /to /upon )
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Answer 1

You must abide by the rules.

'By' is the correct preposition. Abide always takes 'by' as its proposition.

• A preposition is a word or group of words that come before a noun, pronoun, or noun phrase is called a preposition.
• A preposition is used to show time, location, direction, and place.
• Some examples of the prepositions: to, t, in, of, on, into, etc.