1) The candidates whose application forms will not be delivered by the end of he next week will not be considered for the position.
Czy nie powinno być The candidates whose application form
are not delivered....? Zwłaszcza, że kilka linijek później pojawia się podobne (chyba?) zdanie: A number of improvements and corrections will have to be introduced in the projects which
are to be completed by the next of this year.
2) The place I saw on the photo looked exactly like the place I came from
Czy nie powinno być I saw in the photo?
3) Eddie, by whom we were invited, started working for the firm last week.
Tak, wiem że chcąc to przekształcić możliwe jest Eddie, who we were invited by, ... a czy możliwe jest takie zdanie Eddie, who invited us, started working for the firm last week. Pewnie nie ale nie bardzo wiem dlaczego.