帮我解释一下这些题,是关于动词的时态的.帮忙解释详细点,因为我的语法真的很不好,谢谢
1.My daughter ____ health because she spends too much time reading books in her spare time and leaves time for rest and enterainment.
我选的是has damaged 我认为 是他的女儿从过去一直持续到现在,所以才损害身体.可是答案为什么is damaging.
2.It ____ long before we ____ the result of the college entrance exam.
答案是will not be , know .可是如果填is , will know不对吗?