in order that和so that的区别

题目

in order that和so that的区别
I sent the parcel dy express that morning______my mom received it that afternoon.填哪个呢?为什么.还有别忘了告诉我这2个词组的区别...我搞的要晕掉了...

答案

so that
因为
in order to 是 为了
so that 是 以便