I was wondering if I correctly understand quis
in the context of indirect questions.
Here are some examples I have written:
Scio quis veniat. I know who is coming.
Scio cui librum des. I know to whom you are giving the book.
Scio cuius libri sit. I know whose book it is.
Scio quem necaveris. I know whom you killed.
Gratias vobis ago, amici amicaeque!