The composition of the report took two months.
这里的composition 主动 take two months
不会被动take two months 不符合逻辑
花了两个月 took two months
这里的take 作用目标是时间、
Two months were taken for the composition of the report.
如果想要用被动态那要嘛就是用written
The composition of the report was written two months ago.