A. 1. Peter and Amy were in the cafeteria.

2. Cathy wasn't in the cafeteria.

3. Paul and Alex weren't in the theater.

4. Alex was in the library.

B. Were you a university student in 2010?

No, I wasn't.

Were you in Spain?

No, I wasn't, I was in Canada.

Was Becky a police officer in 2010?

No, she wasn't. She was a doctor.

Was she in Canada?

No, she wasn't. She was in Spain.

Were Marie and Joe doctors in 2010?

No, they weren't. They were students.

Were they in Hong Kong?

Yes, they were.

C. 1. They worked very late yesterday.

2. She invited me to her birthday party last weekend.

3. The department store opened a year ago

4. The baby cried for hours last night.

5. I dropped my cell phone in the sink last week.

6. Grandpa enjoyed Disney cartoons when he was young.

D. 1. I bought new shoes yesterday.

2. Dad and I made a bookshelf last weekend.

3. We went on a picnic last Wednesday.

4. Jeremy met Jessica two days ago.

E. 1. Did Alex come home early yesterday?

2. Did she write the novel 11 years ago?

3. Did Brian tell you the story?

4. Did they see a dog at the park?

5. Did Kate read the book twice?

6. Did he teach Spanish last year?