If Shrek __________ (to be) you, he __________ (to build) a bigger swamp castle.
If Shrek were you, he would build a bigger swamp castle.
What __________ (to you/do) if you __________ (to find) a time-turner like Hermione's?
What would you do if you found a time-turner like Hermione's?
If Han Solo __________ (to have) a spaceship, he __________ (to travel) to different galaxies.
If Han Solo had a spaceship, he would travel to different galaxies.