Sentence: Always be interested and listen to the person who you are talking...

[Liza]

Hello,

Could you please tell me which sentence is correct? (if any of them is)

1 Always be interested and listen to the person who you are talking to.
2 Always be interested and listen to the person who you talk to.
3 Always listen to and be interested in the person who you are talking to.
4 Always listen to and be interested in the person who you talk to.

Thanks for your answer.
Bye Liza

[Mister Micawber]

.
These are OK (all are informal English):

1 Always be interested in and listen to the person who you are talking to.
2 Always be interested in and listen to the person who you talk to.
3 Always listen to and be interested in the person who you are talking to.
4 Always listen to and be interested in the person who you talk to.
_________________
Canadian-American native speaker
who teaches English for a living at Mister Micawber's
ESL cafe: Interview with Mr. Micawber