根据以下段落，将其转换为过去进行时。


I am studying for my exams and trying to ignore the distractions around me. My roommate is watching TV and chatting with friends, but I know I need to focus. I am reviewing my notes and practicing problems as much as possible.
I was studying for my exams and trying to ignore the distractions around me. My roommate was watching TV and chatting with friends, but I knew I needed to focus. I was reviewing my notes and practicing problems as much as possible.