Sam: Hi, Timmy! What are you doing? Timmy: I am listening to music on the radio. Sam: I didn’t know you like music. Timmy: I do. Listening to music is my favorite hobby. Timmy: What are you doing, Sam? Sam: I am in the park. I am taking photos with my camera. Timmy: I didn’t know that you have a camera. Sam: I do. Taking photos is my favorite hobby.