preposition (expect of)

1. Spanking or hitting children will get their attention, but it doesn't teach children what is expected of them or how to behave in the future.

I was wondering where "of" after expected comes from. So I look up expect in my dictionary. It states this.
~ sth (of/from sb) . And example sentences are these.

2. Her parents expected high standards from her.
3. Are you clear what is expected of you?

Q2) In #3, if we say the person who expects of you is "I," can I say rephrase #3 in active voice like this?
Are you clear what I expect of you?

Q3) Likewise, can I change it to like this?

Spanking or hitting children will get their attention, but it doesn't teach children what it expects of them or how to behave in the future.