Поменяйте предложения present continuous на present perfect. Предложения внизу I am

Поменяйте предложения present continuous на present perfect. Предложения понизу I am speaking. You are joking. We are reading. I am sitting in front of you/ She is telling me a story. The child is playing. The door is belling. The dog is running. I am thinking about you. You are preparing your homework. We are travelling all of the world.