1.Поставить в вопросительной и отрицательной форме
I'm taking pictures of my friends.
Yhe musicians are per forming

1. I am not taking pictures of my friends.    Am I taking pictures of my friends?2. The musicians are not performing.    Are the musicians performing?

I'm taking pictures of my friends. Are you taking pictures of your friends?I'm not taking pictures of my friends.The musicians are performing.Are the musicians performing?The musicians aren`t performing.