Краткое пояснение: Для образования отрицательных предложений в Past Simple используется вспомогательный глагол 'did not' (didn't) с инфинитивом основного глагола.
Ответ:
- Sam did not build a sandcastle.
- Vera did not run along the beach.
- Bernard did not throw balls for Bonehead.
- They did not wear wetsuits.
- Rudolph did not read a magazine.
- Mandy did not hang out with friends.