1. Pigs may fly, but they are very unlikely birds. 

2. My uncle give me money! Pigs might fly!

3. Tom give up smoking ? Yes , and pigs might fly!

4. I get the scholarship, and pigs might fly.

5. Tom gives up smoking ? Yes pigs might fly.

6. My uncle Cassidy give me money! Pigs might fly if they had wings.

7. His chances of winning are extremely small, but pigs might fly.

8. Yes you might win the lottery and pigs might fly.

9. My uncle Cassidy gives me money! Pigs might fly if they had wings.

10. Emily , my GPA is 2.7 last year. I get the scholarship, and pigs might fly.

11. Financial market contagion, many have come to think, is a thing of the pigs might fly.

11. try its best to collect and create good sentences.

12. Did you just say that you want to eat less? Yeah, pigs might fly!

13. "There's a chance he won't get involved in this, of course." — "And pigs might fly."