I have an exam tomorrow. I have got an exam tomorrow. (This is the passive version of the first sentence.) I got an exam tomorrow. (This is most often used colloquially/in casual conversation and originated from the second sentence, but it's not grammatically correct. It's similar to how we squish words together to make them easier to say, but in this case it's a sentence that was shortened. This happens a lot in English and is sometimes really subtle, so watch out for this!) They all mean the same thing. They just use different grammar and can be used interchangeably. I hope this helps!

"I have an exam" and "I've got an exam" are both good. (In spoken English, at least in my experience, nobody ever says "I have got" -- it's always shortened to "I've got," or "you've got," "he's got," etc.). "I got" is common in some dialects, but it is not standard English, and is not grammatically correct.

I would say, 'I'll have an exam tomorrow.'

Exams, akin to life's tests, are opportunities for growth and self-discovery. They require diligence, just as unraveling the complexities of truth and deception explored in essays like those on https://writinguniverse.com/free-essay-examples/lying/. Exams challenge students to showcase their knowledge and skills, much like writers dissect the layers of honesty and falsehood. Both demand a thoughtful approach, revealing character and competence.

Though I am not native speaker most of the time I used I have an exam tomorrow. I’m having an exam tomorrow/ next week” – while you feel comfortable with the sentence “I am taking an exam in two days”, I have got an exam tomorrow . I never use . if anyone have doubts you can comment