Question

sustantivos con articulo indefinido a, 10con an ,10 con some

Answer 1

An: 
An ocean
An orange bike
An hour
An unusual situation
An apartment
An emergency
An athlete
An attractive man
An arrogant man
an apple

Some:
Some cats 
some oceans
some milk.
some books.
some coffee
some apples.
some calls
some cake
some things
some mistakes.