Ahmed I admire your determination. Native Americans ought to be as interested in their language
1) Here, affordable hearing aid was fitted with nerve that was saved by operation. Is it right?
No Ahmed, ambivalent, at first glance seems to say that the hearing aid was attached to the nerve
The affordable hearing aid was fitted to the ear saved by the operation
However, that's clunky if not pretty obvious or redundant. Thus
Its nerve saved, the boy….
Hope Con or someone his equal can help you further as 1) alone wears me out for the rest of the day