I totally forget about it.

我完全忘了这回事。

youdao

I'm sorry. I totally forget. I've had a lot on my mind.

对不起，全忘记了。我脑袋里塞了太多的东西。

youdao

I could totally forget what happened in the office when I come home and see her simple life and pure pleasure.

当我回到家，看到她就那样简单地生活和单纯地快乐着，我就完全忘记在办公室里发生的事情。

youdao