Question

Choose the best alternative that complete the sentences.
I - My birthday is _____ January 30th.
II - My birthday is ____ January.
III - My birthday is ____ ten days.

a) In – on – on
b) On – in – in
c) In – in – on
d) On – on – in
e) In – on – in

Answer 1

Letra B
o In é usado em meses 
o On é datas e dias específicos