Here are the correct question words for each item in your exercise:

1. **When** did you go to Egypt?
2. **What** is her favorite flower?
3. **How much** flour do we need?
4. **Where** does Nancy spend holidays?
5. **Do** you play the guitar?
6. **Where** is the post office from here?
7. **How** does Rosie sing?
8. **What** is your coat?
9. **Who** can't do a handstand?
10. **What** was your car when you sold it?
11. **Who** were invited to the party?
12. **When** is Thanksgiving celebrated in the US?
13. **What** is the Eiffel Tower?
14. **How long** have they had their pet?
15. **Whose** is that notebook?

Feel free to ask if you need further assistance!