1) мы поем новую песню сейчас. 2) моя собака пьет суп в данный момент. дети танцуют на концерте в настоящее время. (перевести на и поставить в вопросительную и отрицательную форму.)

We are singing a new song now. Are we singing a new song now? We aren't singing a new song now.
My dog is drinking soup now. Is my dog drinking soup now? My dog isn't drinking soup now.
Children are dancing on the concert now. Are children dancing on the concert now? Children aren't dancing on the concert now. 

1 We are singing a new song now. We aren't singing a new song now. What are we doing now?
2My gog is drinking the soup at this moment. My dog isn't drinking the soup at this moment. What is my dog drinking?
3The children are dancing at the concert at this moment. The children aren't dancing at the concert at this moment. What are the children doing at the concert?