Now that you failed the exam,you should get down to working hard now为什么不能用In that开头?As可以么?

Now that you failed the exam,you should get down to working hard now为什么不能用In that开头?As可以么?
Now that you failed the exam,you should get down to working hard now
为什么不能用In that开头?As可以么?

Now that you failed the exam,you should get down to working hard now为什么不能用In that开头?As可以么?
now that 是一个短语 意思是既然、、 用in that/as 没有这个意思

这里用Now that肯定是最好的，很合乎语境。个人认为In that/As也可以用，只不过听起来意思怪怪的。