If you (have) a chance to learn a new sport, what sport ...? Why?
If you had a chance to learn a new sport, what sport would you learn/choose/try?
If you (can) do anything you (want), how ... (celebrate your next birthday)? Why?
If you could do anything you wanted, how would you celebrate your next birthday?
If you (can) travel to any country in the world, where ... ? Why?
If you could travel to any country in the world, where would you travel/go ?
If you (have) a superpower, what ...? Why?
If you had a superpower, what would it be/superpower would you like to have?
If you (have) your perfect job, what ... ? Why?
If you (have) your perfect job, what would it be? Why?
If you (not have) any money but (want) to buy something, what ...? Why?
If you didn't have any money but wanted to buy something, what would you do?
If you (can) meet a famous person, who ...? Why?
If you could meet a famous person, who would you meet/like to meet/choose?
If you (be) a singer, what music style ... ? Why?
If you were a singer, what music style would you choose/play?
If you (win) the lottery, what ...? Why?
If you (win) the lottery, what would you do/buy?
If you (have) to learn another foreign language, what...? Why?
If you had to learn another foreign language, what language would you like to learn/learn/choose?