Перевести в отрицательную и вопросительную форму present 1. i am writing a letter now 2. mike is riding a bike now 3. we are listening our teacher at this moment past 1. children where going to the club yesterday at 3 o'clock 2. my mother was buying products 3 days ago at midday future 1. she will be doing her homework tomorrow at 4 o'clock