Помогите пожалуйста
как образовать отрицательную форму
His friends are very busy now
Robert have a nice living-room in his flat
my sister is an accountant on our firm
We have two lectures and two seminars evry day
she have a nice puppy

gis frinds aren't very now.Robert haven't a nice living-room in his flat my sister isn't an accountant on our firm. We havrn't two lectures and two seminars evry .