英语语法分析

I'm not sure why she refused their inv IT ation.

我尚不能肯定她为什么拒绝他们的邀请。

I received an inv IT ation to the party yesterday, but I refused to accept IT.

昨天我接到一份参加晚会的邀请，但我拒绝了接受。

The result of selecting coope ation will unite Public goal and private profit to reach that goal.

而如何操作才能将公共目标与私人利益统一起来，选择合作，将会有助于目标的完成。