it is because you speak ill of others behind her back_____she hates you.
问题描述：
it is because you speak ill of others behind her back_____she hates you.
这个答案是that 为什么不能是why
答
这里是强调句式it is.that的固定搭配,不能用why替代.整个句子的意思是:正是因为你在她背后说坏话她才恨你.