Can I use "keep the rules" instead of "stick to rules"? Does "stick to" sounds more formal?
"Keep the rules" sounds grammatically correct, however, it is not a common English expression and it is not something you would hear native English speakers say. Instead, native speakers would be more likely to say "follow the rules." This expression is a little less informal than "stick to the rules". Ex: She never follows the rules. Ex: If you follow all the rules, you won't get in trouble.