Which one is correct?

[Cerise]

I did some exercises and I found this answer quite confusing.
It's about tenses. Someone talked about something unbelievable and the sentence after this was: Yes, you _______ (hear) me correctly.
My answer was "heard" and it turned out to be correct. But since I guessed it I wonder if using present perfect is a correct solution? Why (not)?
Oh and there's another one:
The new shopping centre _________ (open) tomorrow.
"Opens" is the correct solution, because it's scheduled. Why not "is opening"? That would be a fixed arrangement then and it seems to be correct.

[Beeesneees]

Are those questions from this site? If so, please can you provide a direct link to them so we can take a closer look.

(In fact, if they're online even if they aren't ours. a direct link would be useful.)
_________________
"Inside every old person is a young person wondering what happened."
Terry Pratchett

[Cerise]

No, It was photocopied from an exercise book... unfortunately I don't know which one.
But the second sentence is from an exercise when you can use only future tenses and has no context.. if that helps?
I can write here the exercise where the first sentence is taken from though...

[Beeesneees]

'Heard' is the past tense.
'You heard me correctly' - you heard me in the past (because I have now finished saying it).
That's the reason 'heard' is correct in your first sentence.

If you weren't limited to certain tenses, then 'opens' or 'is opening' would work with the second sentence - there's nothing wrong with either of them BUT as the instructions clearly stated that you were only allowed to use the future tense, then 'opens' is the obvious choice (unless 'will be opening' is also an option)
_________________
"Inside every old person is a young person wondering what happened."
Terry Pratchett

[Cerise]

Thank you. :) I get it.
Only one more question:
I know that present simple can be used when talking about future. ("opens")
But what about present continuous? I thought this one could also be used to talk about future...? When I say "I'm having lunch with him later" I'm talking about an arrangement in future.