Jonh is nine years old. He is a boaster. That039;s what

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 последнем случае, в вопросе можно поменять I на you и напротив