Answer:
1. Knives are made of steel.
2. Policemen could not catch the thieves.
3. There are beautiful cities in the valleys.
4. His replies to my questions were not correct.
5. Daughters- in-law should respect their mothers-in-law.
6. The commanders-in-chief of the armies were brave men
7. The fairies told the children interesting stories
Step-by-step explanation: