1. If (when is also okay) you find the door is blocked, it means that...
2. When will (do is also okay) we get home?
3. We can't see her bottom teeth in the picture, which, by the way, she doesn't have (she's missing is also okay).
4. How can you run so many (you can't use the word much here) miles?
5. What (which is also okay) other show just came out?