11. If you knew Japanese, you would understand what I mean.
→ Were ............................................................
12. If I were a bird, I would fly.
→ Were ............................................................
13. If you had trained harder, you would have won the game.
→ Had ............................................................
14. If I were you, I would not behave in such a polite manner in front of my boss.
→ Were ............................................................
15. If I studied at a prestigious university, I would have the opportunity to work abroad.
→ Were ............................................................