1. Victor was free in the evening. - Was Victor free in the evening? - Victor wasn't free in the evening. 2. John was in America. - Was John in America? - John wasn't in America. 3. I was very busy. - Was I very busy? - I wasn't very busy. 4. She was in the lecture. - Was she in the lecture? - She wasn't in the lecture. 5. The child was 10 years old. - Was the child 10 years old? - The child wasn't 10 years old. 6. This work was interesting. - Was this work interesting? - This work wasn't interesting. 7. The expedition was in Africa. - Was the expedition in Africa? - The expedition wasn't in Africa. 8. This film was long. - Was this film long? - This film wasn't long. 9. My mother was at home. - Was my mother at home? - My mother wasn't at home. 10. The workers were at the factory. - Were the workers at the factory? - The workers weren't at the factory. 11. The students were at the University. - Were the students at the University? - The students weren't at the University. 12. The children were at school. - Were the children at school? - The children weren't at school. In the past tense, we add the suffix "-ed" to regular verbs to form the past simple form. We used "was" for singular subjects like "I," "he," "she," and "it," and "were" for plural subjects like "we," "you," and "they." To form questions, we inverted the subject and auxiliary verb, and to form negative sentences, we added "not" after the auxiliary verb "was" or "were." In the future tense, we used the auxiliary verb "will" before the base form of the verb.