I always get up _______ six in mornings.(填介词)

问题描述:

I always get up _______ six in mornings.(填介词)
My mother always goes to church _______ Sunday.
Robert was in London ________ 1995.
Susan must go to school _______- September 1st.
What did you say ______ him?
填介词

at
on
in
on
to