3 passages

1.A person can becane a heavy drinker because one day she/he felt very sad and started to drink and he/she liked it so started to drink more frecuently and became a heavy drinker.

2.I think that the man behaved digerently towards Pluto because Pluto was with himnevery time and he became fond of Pluto.The cat was diferent of the other animals and the wife because he spent more time with the man,and was more kind and friendly.No,he is not special for any reazon.No,he dosnt represent anything. 

3.Yes,I'm agree because I think the human heart acts like that.