Придумать 5 предложений present simple и образовать от них отрицательное и вопросительное значение

do I know that you believe me?

do I understand what he means?

what time the plane leaves?

do I see you are happy?

Можно в отрицательной форме

I brush my teeth every day. I know that you believe me. I understand what he means. The plane leaves at 10 o'clock. I see you are happy.