A) 1. My sister tidied her room yesterday.
2. My sister didn't tidy her room yesterday.
3. Did your sister tidy her room yesterday?
B) 1. We lived in London last summer.
2. We didn't live in London last summer.
3. Did you live in London last summer?
C) 1. Sandra and Elsa talked on the phone last night.
2. Sandra and Elsa didn't talk on the phone last night.
3. Did Sandra and Elsa talk on the phone last night?
2. 1. She waited for the bus.
2. They invited Mary and Rachel to the party.
3. I didn't live in Portugal one year ago.
4. Did you like the film last night?
5. We didn't visit our friends on Monday.
6. Did your grandparents dance at the party?
7. The bus stopped at the traffic lights.
8. My brother didn't water the plants yesterday.
9. You didn't study for the test.
10. It rained a lot last night.
11. Did she try her new dress on?
12. The film ended late yesterday.
13. Children walked to school on foot last month.
14. Dad and I washed the car in the morning.
15. He didn't work because he was too tired.
2. At the same time they were discussing the results of the experiment. Past continuous active
3. At 11 o’clock Jack will be repairing his car. Future continuous active
4. Stainless steels have successfully made their way into engineering applications.present perfect active
5. The use of metals had marked one of the greatest stages in the evolution of man. present perfect active
6. Tom will have finished this book by tomorrow evening. Future perfect tense active
7. The conquering Normans were greatly impressed by the industrial efficiency they found in England. Past indefinite passive
8. The Rolls-Royce motor car is known as the best car in the world. Present indefinite passive
9. English kings and queens have been crowned in Westminster abbey for about 1000 years.present perfect passive
10. The results of the research are being considered by alternative methods. Present continuous passive