1. Does a dangerous snake live under my bed?
A dangerous snake doesn't live under my bed.
2. Can I work as a tailor?
I can't work as a tailor
3. Can I protect all little children in my school?
I can't protect all little children in my school.
4. Have you (I) fought a lot of dangerous animals
?
I have not fought a lot of dangerous animals
5. Have you got five real guns?
I haven't got five real guns.
6. Have you (I) hunted bears with a gun?
I haven't hunted bears with a gun
В крайнем случае, в вопросе можно заменить I на you и наоборот