face这个单词的用法是不是face放句首facing和be faced with

I am facing loads of uncertainties in our current research project.
在当前的研究课题里,我们面对着很多不确定因素
I have to be face with lots of difficulties
我不得不面对很多问题
Facing lots of problems,I still decide to work on the project.
即使面对很多难题,我依旧决定去面对他.
He spent lots of money in front of her to save face.
她在他的面前花钱为了撑面子