"We can't live there forever." is accepted.
Yes, it is. Do you think it shouldn't be?
I hear ,,pra" in the fast version, by the way it doesn't matter if it's ,,para" or ,,pra", because both are correct, so both should be accepted.
I could be wrong about this, but in Brazil a lot of people say "pra" for the word spelt "para", but as far as I'm aware this is just slang speech and there isn't a formal word spelt "pra". This threw me a lot when I started living here.
Spanish say 'pa' and Galicians say 'pra' too (slang for 'para')
I put always instead of forever. This should be accepted.