Could you please help me correct these sentences for me. I've looked over them and think everything is correct.
1 A tooth whose nerve has died has to be bleached internally for it to go white again.
2 They loved each other even if/though not in a boyfriend girlfriend kind of way. It was more of a brother sister love and attachment.
3 The video freezes with 2 minutes to go. So the first 3 minutes of the clip, I can watch, and the last two I can't.
4 I want to watch the best rated film you have./ the film that's rated the best.
5 Look at the (difference) between his teeth then and now. Don't you see a difference?
6I'm wondering what color she'll (grow up to) be?

7 The only thing I'm iffy about is that.
Thank you