Before that, the government hadn't been aware of the crisis and no corresponding measures had been taken, either.
在问题出现之前,也就是说问题出现不是现在,二是一段时间以前,是个过去时间,而在这之前政府没有意识到……,很显然这是个过去的过去,故用过去完成时,采取措施也是指到那时政府也没有采取任何措施,也是过去的过去,所以都应该用过去完成时。另外,否定句中的“也”要用either,不用too。
For another, the crisis occurred before the government realized it and no corresponding measures were taken.
Fon another, government hasn't awared the crisis and taken the corresponding measures yet.政府做主语,所以不用被动语态been,后面的措施是政府主动去采取的,所以也不用被动语态。