He has got a lot of friends. They have got cows and hens. Ann has got pens and dolls. Ben and Paul have got nice balls.
Если стоит he/she/it, то будет "has". Если they/we/are/I, то будет "have". Проще говоря, в единственном числе будет "has", но кроме "I". "Have" будет во множественном числе и c "I".