1. Is it a house? - Yes. 2. Is there a house there? - Yes. 3. Is the dog in the house? - Yes. 4. Are they in the house? - Yes. 5. Are the dogs in the house? - Yes. 6. Are there dogs there? - Yes. 7. Is there a dog in the house? - Yes. 8. Is it a tree? - Yes. 9. Is the bike under the tree? - Yes. 10. Is there a bike there? - Yes. 11. Are there bikes there? - Yes. 12. Do they like the bike? - Yes. 13. Does he like the bike? - Yes. 14. Does the boy see the bike? - Yes.