I have the same question. The app have not taught me the meaning of 会

I think it may be optional (not sure because I used it in ym response) but the huì emphasises that it is something you will do at a later date.

Also correct. I believe that developer only considers the literal translation.

It is common for one to treat 這個 as "the", even if it literally means "this one". IN reverse course, such answer is also accepted.

In this case, your translation (time-subject, subject-time; vice versa) is good to go for.

I'm not sure if it is strictly necessary, but duolingo wants you to use 会 before 看.