Respuesta:
1. Are the girls riding their bikes?
2. is he taking out a book?
3. am i washing my hair?
4. is the baby crying?
5. are you listening to music?
6. is the dog running after the cat?
7. is she sitting on the chair?
8. is my mum preparing lunch now?
9. are we carrying buckets?
10. is the teacher opening the window?