With a lot of difficult problems ________,the newly-elected

With a lot of difficult problems ________,the newly-elected president is having a hard time．
A．settled B．settling C．to settle D．being settled
settle与problem之间是被动
为什么C项不用to be settled啊?
句型有：with sth.adj.with sth.to be done with sth.to do.with sth done.
不是说,with后不接被动吗?
为什么有with sth.to be done
那不就是to be settled了吗?