Краткое пояснение:
Для образования предложений в Past Simple с глаголом 'to be', нужно выбрать правильную форму: 'was' для единственного числа (I, he, she, it) и 'were' для множественного числа (you, we, they).
Пошаговое решение:
1. Was Jenny at the party?
2. Was Lumpy quiet yesterday?
3. Were you in Kongo?
4. Were your parents in the local gym yesterday?
5. Was your friend at school yesterday?
6. Were you happy yesterday?