As respostas para cada lacuna se encontra em negrito abaixo:

Bob is going read a book

> Is Bob going read a book?

> Bob is not going read a book.

We are going to study

>Are we going to study?

>We are not going to study.

> You are going to play tenis.

Are you going to play tenis?

> You are not going to play tenis.

> It is going to eat that bone.

> Is it going to eat that bone?

It is not going to eat that bone.

I am going to study English.

> Am I going to study English?

> I am not going to study English.

Espero ter ajudado!

:)