1. Tom and Jane aren't singing a song.
- Are Tom and Jane singing a song?
- Yes, they are.
2. My brother isn't listening to the radio.
- Is your brother listening to the radio?
- No, he isn't.
3.They aren't cleaning the house.
- Are they cleaning the house?
- No, the aren't.
4. Jim isn't riding a bicycle.
- Is Jim riding a bicycle?
- Yes , he is.
5. The cat isn't drinking milk.
- Is the cat drinking milk?
- No, it isn't.