common mistakes

The ones with (*) are correct

 I have 32 years. (I have 32 years old).
 I am 32 years old (I am 32.)*

 He is manager at OM Personal.
 He is a manager at OM Personal*

 I like ski.
 I like skiing.*

 I born in Buenos Aires. (I'm born in Buenos Aires).
 I was born in Buenos Aires.*

 I am living 20 minutes from downtown.
 I live 20 minutes from downtown.*