Odpowiedź:
Wyjaśnienie:
1. If there were no tests at school, students would be happy.
2. If humans had two heads, they would easier acguire knowledge.
3. If I hadn't slept at all last night, I would have been tired.
4. I would be the luckiest student in the school if I passed my final math test.
5. If I had chosen a different secondary school, I would have learnt much more.
