1 They are playing volleyball.
2 The boy and the dog are playing with a ball.
3 My friend and I are not dancing now.
4 He is riding his bike.
5 Why are you looking at me like that?
6 Mary is drinking tea.
7 I'm listening to music.
8 Mike is telling me a story.
9 Susan is writing a letter.
10 Alan is working very hard.