It is been/was a hard day, and it is not over yet. i still have to work on the report. i`ve began/ begun it last night, but far i`ve written/ wrote only two pages. and it is due tomorrow. work has been / was so difficult lately.

It is been a hard day, and it is not over yet. I still have to work on the report. I  began it last night, but so far I`ve written only two pages. And it is due tomorrow. Work has been so difficult lately.