Поставить глаголы в следующих предложениях в утвердительную,вопросительную и отрицательную формы present simple 1)you (to be ) good friends 2) it (to be) difficult to remember everything

1) You aren't good friends.
Are you good friends?
2) It isn't difficult to remember everything.
Is it difficult to remember everything?

You are good friends/   You are not good friends/  ARE you good friends?
it is difficult           it is not difficult       is it difficult ?