Давайте разберем, как поставить данные предложения в вопросительную и отрицательную формы. Мы будем работать с прошедшим временем глагола "to be", который в прошедшем времени имеет следующие формы:

• I was
• You were
• He/She/It was
• We were
• They were

Чтобы образовать отрицательную форму, мы добавляем "not" после вспомогательного глагола "was" или "were". Вопросительную форму мы образуем, меняя порядок слов, ставя "was" или "were" перед подлежащим.

Теперь давайте рассмотрим каждое предложение:

1. Утверждение: I was born in April. Отрицательное: I was not born in April. Вопросительное: Was I born in April?
2. Утверждение: We were at the theatre on Sunday. Отрицательное: We were not at the theatre on Sunday. Вопросительное: Were we at the theatre on Sunday?
3. Утверждение: He was a Hollywood star. Отрицательное: He was not a Hollywood star. Вопросительное: Was he a Hollywood star?
4. Утверждение: I was late for the bus. Отрицательное: I was not late for the bus. Вопросительное: Was I late for the bus?
5. Утверждение: You were angry at my words. Отрицательное: You were not angry at my words. Вопросительное: Were you angry at my words?
6. Утверждение: She was a great actress. Отрицательное: She was not a great actress. Вопросительное: Was she a great actress?
7. Утверждение: I was happy. Отрицательное: I was not happy. Вопросительное: Was I happy?
8. Утверждение: He was very busy last week. Отрицательное: He was not very busy last week. Вопросительное: Was he very busy last week?
9. Утверждение: I was very poor at that time. Отрицательное: I was not very poor at that time. Вопросительное: Was I very poor at that time?
10. Утверждение: They were good students. Отрицательное: They were not good students. Вопросительное: Were they good students?
11. Утверждение: I was on duty on that day. Отрицательное: I was not on duty on that day. Вопросительное: Was I on duty on that day?
12. Утверждение: We were on holiday in August. Отрицательное: We were not on holiday in August. Вопросительное: Were we on holiday in August?
13. Утверждение: I was eager to make a career. Отрицательное: I was not eager to make a career. Вопросительное: Was I eager to make a career?
14. Утверждение: She was in great shock. Отрицательное: She was not in great shock. Вопросительное: Was she in great shock?
15. Утверждение: I was in love with that girl. Отрицательное: I was not in love with that girl. Вопросительное: Was I in love with that girl?
16. Утверждение: He used to be my best friend at school. Отрицательное: He did not use to be my best friend at school. Вопросительное: Did he use to be my best friend at school?
17. Утверждение: This building used to be a factory. Отрицательное: This building did not use to be a factory. Вопросительное: Did this building use to be a factory?

Таким образом, мы преобразовали все предложения в отрицательную и вопросительную формы. Если у вас есть вопросы по этому процессу, не стесняйтесь задавать их!