我在这里差不多完成了。

I've ___pretty ___much finished here.

她对这个主题几乎无所不知。

She knows ___pretty ___well everything there is to know on the subject.

你几乎可以告诉你母亲任何问题，她会尽力帮助你。

You can ___pretty ___much tell your mother any problem you have and she'll try her best to help you out.