Believe it or not...
1. Believe it or not, I didn't get into trouble for being late for class today.
2. Believe it or not, I saw your house on fire on my way here.
3. Believe it or not, I'm going to America tomorrow!
A: Believe it or not, one of the narrowest street in the world is only 49cm wide.
B: Unbelievable! How do people go through it?
A: That's what I'm wondering, too.
B: I wish I had a chance to see it with my own eyes.