Помогите перевести в отрицательную и вопросительную форму Present 1. I am writing a letter now 2. Mike is riding a bike

Present Progressive: 1. I am writing a letter now. I am not writing a letter now. Am I writing a letter now? 2. Mike is riding a bike now. Mike isn\'t riding a bike. Is Mike riding a bike? 3. We are listening our teacher at this moment. We aren\'t listening our teacher at this moment. Are we listening our teacher at this moment? Past Progressive: 1. Children were going to the club yesterday at 3 o\'clock. Children weren\'t going to the club yesterday at 3 o\'clock. Were children going to the club yesterday at 3 o\'clock? 2. My mother was buying products 3 days ago at midday. My mother wasn\'t buying products 3 days ago at midday. Was my mother buying products 3 days ago at midday? Future Progressive: 1. She will be doing her homework tomorrow at 4 o\'clock. She won\'t be doing her homework tomorrow at 4 o\'clock. Will she be doing her homework tomorrow at 4 o\'clock?