10 Положительных и 10 отрицательных предложений с глаголом “to be”. Помогите пожалуйста!)

Настоящее время :I am a student My mother is a teacher My father is a doctor My school is very big My friend is (name), she is very friendly I like swimmingSwimming is very great exercise Прошедшее :I was at school Where were you? We were at home Это положительные