Question

Underline the correct alternative.

I was (on-in) paris last winter
the english class is (at-on) 3 o'clock
my mother and i were in salvador (on- at) saturday
the boy was (in-at)home in the morning.
in Brazil, spring begin (in-on) september.
there was a computer (at-on)the desk

Answer 1

a resposta esta na ordem
in
at
on
at
on
on

Answer 2

 ordem correta 
in
 at
 on
at 
on
 on