1- If people eat too much, they become fat. (0 conditional- correct, although we can also use ‘get’ here, especially with an informal adjective like ‘fat’ ) 2- If I spoke
English fluently, I would work in England (2 conditional -correct) 3- If I don't pay my
bills, I will become a dishonest person (this should be the 1st conditional, it isn’t a general truth, but rather a real/ likely situation ) 4- if you sit in the sun for
too much, you will tan. (1 conditional- correct) 5- if I had eaten less yesterday, I
wouldn't have needed to go to gym today (3 conditional- good job)