2.
I asked them to meet me on Zoom yesterday because I knew that I couldn’t go to the office.
3.
I asked them to meet me on Zoom yesterday because I knew that I couldn’t have gone to the office.
4.
I asked them to meet me on Zoom yesterday because I knew that I wasn't able to go to the office.
5.
I asked them to meet me on Zoom yesterday because I knew that I wouldn't be able to go to the office .