“这是我们正在努力的目标”怎么用“strive toward”翻译成英文？

strive的意思是to try very hard to do something or to make something happen, especially for a long time or against difficulties:花很多力气做某事。
这句话可以说
we are striving toward this goal.
或this goal is what we are striving toward .

This is the goal we are striving toward.

This is our goal which we are striving toward.

This is the very goal toward which we are stiving.

It is the goal that we are striving toward.