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Hello,

I know that the correct options are 'will' in both sentences, but would it be also correct to use 'be going to' in the first sentence to show that you are sure that the dog is going to bite the person. And in the second sentence too to show that you are sure your friend will not fail the exam. Maybe even continuous form in the second example wouldn't be a mistake?

Don't touch that dog. It's will/is going to bite you.

I am sure you will not/are not going to fail the exam next week.

Thanks
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Nina_NiaDon't touch that dog. It's will/is going to bite you.
I am sure you will not/are not going to fail the exam next week.
When you use the forward slash to separate options you sometimes leave the reader confused, especially when one option contains more words than another. I usually underline the options, in addition to using the slash.
(I have the impression your first responder was confused about your intention.)

Don't touch that dog. It will/is going to bite you. (Note that I removed the contraction.)

I am sure you will not/are not going to fail the exam next week. .

There are lots of ways to indicate "future tense." Both your options are correct here. I don't see any difference in meaning.

Of course in your first sentence, we understand it to mean, "If you touch it, it will bite you, etc."

<< And 'I am sure you are not failing the exam next week' would be correct too?>>

Yes, this version is also used to express the same thought.
Comments  
And 'I am sure you are not failing the exam next week' would be correct too?

Thanks
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Dear Nina Nia, you can only use the combination of will and going to in one sentence if you put a "be" before "going to. You can either say: "I am going to work." or "I will be going to work." You cannot say "I will going to work." Note that "will" and "going to can only be combined in future forms.
 Avangi's reply was promoted to an answer.
Hi,

I am sorry if I confused my readers. Will be careful next time. Thanks Emotion: smile
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