1. We heard the echoes in the caves. 6. The ships struck the reefs. 2. The ladies spoke to the children. 7. Our feet troubled us. 3. The boys went for loaves. 8. His teeth hurt him badly. 4. The men fed the calves. 9. The horses are eating carrots. 5. The knives are lying on the table(s). 10. These are the houses in which we stay.