Question

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there are three boys in my class

Peter has breakfast at 7 every morning

Answer 1

there aren't three boys in my class

how many boys in your class ? 

peter hasn't have breakfast at 7 every morning 

what time does peter have breakfast ?

 

Answer 2

(-)there aren't three boys in my class.

(?)Are there three boys in my class?

(-)Peter hasn't breakfast at 7 every morning.

(?) Has Peter had breakfast at 7 every morning?