in return作为回报,作为交换;反过来,反之

2.The report said preventable mistakes resulted in at least forty-four thousand deaths each year.

result in导致,结果是

例句：The game resulted in another victory for our team.
      比赛结果, 我们队又获胜了。

      The flood resulted in a considerable reduction in production.
      这次水灾造成相当大的减产。

3.Even if the hours are reduced, they are also clearly demanding.

even if即使, 纵然

例句：I wouldn't lose courage even if I should fail ten times.
      即使要失败十次, 我也绝不灰心。