Search:

Right. :)
Сколько я должен?
Сколько я должна?

Let me add this example. (:
Mir ist kalt. — Мне холодно.


It's similar to "I am glad to see you," but "я" is omitted and the word order is a bit different.

I - Я (often omitted)
am - ø
glad...

It's not easy for a native speaker to give an exhaustive explanation. :D These are just different grammar cases, three types, so to say.
But I assure you that everything is correct in the examples.