Explanation:
Rule: To form the negative past simple, use 'did not' (didn't) followed by the base form of the verb.
- 1. Sam did not build a sandcastle.
- 2. Vera did not run along the beach.
- 3. Bernard did not throw balls for Bonehead.
- 4. They did not wear wetsuits.
- 5. Rudolph did not read a magazine.
- 6. Mandy did not hang out with friends.
- 7. We did not have a picnic.
- 8. He did not ride a donkey.