1.My brother tried to touch them,buy my father warned him (-) (?) 2.My father said it was against the rules (+) (?) 3.Last we observed natural gases and oil (+)

1. (-) my brother not tried to touch them, buy my father warmed him
(?) Is my brother tried to touch them, buy my father warmed him ?

2. (-) my father not said it was against the rules
(?) is my father said it was against the rules ?

3. (-) last we not observed natural gases and oil
(?) are we last observed natural gases and oil ?

4. (-) and officer not said the fee was to help preserve the museum
(?) is and office said the fee was to help preserve the museum ?

{ aku lupa itu kata kerja nya dirubah lagi ke V1 atau engga, maaf ya kalau salah}