All singulars into plurals. 1. i heard the echo in the cave. 6. the ship struck the reef. 2. the lady spoke to the child. 7. my foot troubled me. 3. the boy went for а loaf. 8. his tooth hurt him badly. 4. the man fed the calf. 9. the horse is eating а carrot. 5. the knife was lying on the table. 10. this is the house in which i stay.

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.