PMP MOCK exam timing

I am struggling to complete my mock exam in 4 hrs. I generally not used to mark any question, may be that is the reason for taking longer time. Any suggestion on how to approach so that at least I can finish my exam within 3 hrs and 15 minutes and use my remaining time for reviewing.

I was the one sufferer of this weakness. But I  managed it beautifully. 

Just take time , do practice and prepare (almost memorise) every thing so readily , that thinking and analysing could not waste your golden time of 4 hours.

You can refer this LL.