Since I started working, I've been busy. In the morning I wake up and go to work. When I got home, it was already dark. When I get home I eat, spend time with my family and then sleep.
Since I started working, I have been very busy. I woke up in the morning and went to work. When I got home, it was getting dark. When I got home, I ate and slept with my family.
Since I started working, I've been busy getting up in the morning, then going to work, getting home and getting dark, then going home for dinner, spending time with my family, and then going to bed.