Answer:
Explanation:
Conditionals:
Zero:
Facts that are generally true or scientific facts. The condition has always the same result.
Present simple + present simple.
If you heat ice, it melts.
First:
A possible situation in the future. A result that may happen.
Present simple + will/won't.
If you study, you will pass the exam.
Second:
Hypothetical or unlikely situations in the present or future.
Past simple + would + verb.
If I knew you were coming, I would buy a chicken.
Third:
To imagine a different past or situation that did not happen.
Past perfect + would have + past participle.
If I had gone to university, I would have studied medicine.