2) phone) dad at work before she (to leave) for heir trip. 3) turn on) the radio after wash)the dishes.

2) Aida had phoned Dad at work before she left for her trip.
3) Susan turned on the radio after she had washed the dishes.

We walk through the park every day. (walked)

2. He is a good student . (was)

3. He drinks coffee with all his meals. (drank )

4. They come to school by bus. (came)

5. He needs a new suit. (needed)

6. He talks to us in English. (talked)

7. We are good friends. (were)

8. He has many friends here.(had)

9. They have a new car. (had)

10.She and I are students in the same class. (were)

11.She speaks Spanish well. (spoke)

12.He reads the newspaper at breakfast. (read)

13.I buy all my clothes in that store. (bought)

14.He smokes a lot. (smoke)

15.We learn many new words. (learned)

16.The teacher asks us many questions.(asked)

17.Our lesson ends at two o`clock. (ended)

18.The weather is good. (was)

19.Both windows are closed(were)

20.There is nobody at home. (was)

21.He follows his brother everywhere. (followed)

22.At the end of the school year, I sell all my books. (sold)

23.I understand him well. (understood)

B. Past tense 2: question form.

Change to the question form.

1. He spoke to me about it yesterday. Did he speak …

2. She waited for us on the corner. Did she wait …

3. They wrote him several letters. did they write…

4. The bus stopped on this corner. did the bus stop…

5. They had dinner with us last night. did they have …

6. She wanted to go with us. did she want…

7. He preferred to stay at home.did he prefer …

8. Monica knew him very well. did she know  …

9. You got up very early this morning.did you get up …

10.They came to school by bus. did they come…

11.Julio read about the accident in the newspaper last night.did Julio read …

12.They lived near us. did they live …

13.She spoke to them in Spanish. did she speak …

14.We walked together for a long time. did we walk…

15.He bought his car in Europe. did he buy …

16.She put on her hat and coat. did she put…

17.It rained very hard last night. did it rain …

18.He arrived late for the lesson. did he arrive…

19.She wrote him a letter from New York. did she write …

20.We ate dinner in a restaurant last night. did we eat…

21.They sat near her at the play. did she sit …

Объяснение:

Прости, но я не могу ответить на остальное. Я не так уж знаю предлоги (prepositions)

1. Shall I study Histology soon?  I shan`t study Histology soon. 2. Will Dr. Smith treat the sick animals? Is he a good specialist?  Dr. Smith won`t treat the sick animals. He isn`t a good specialist. 3. Does Prof. Smith diagnose heart diseases? Prof. Smith doesn`t diagnose heart diseases. 4. Did we enter the Institute last summer?  We didn`t enter the Institute last summer. 5. Shall we have three lectures tomorrow? We shan`t have three lectures tomorrow. 6. Do we want to become veterinary surgeons? 6. We don`t want to become veterinary surgeons. 7. Will he visit us on Sunday? He won`t visit us on Sunday. 8. Will they return in a week? Won`t they stay there long? They won`t return in a week. They will not stay there long. 9. Will you receive your grants on the 22nd of December?  You won`t receive your grants on the 22nd of December. 10. Shan`t we have any exams in December? We shall not have any exams in December. 11. Did the teacher ask us many questions? The teacher didn`t ask us many questions. 12. Did he join the students’ Scientific Society last year? He didn`t join the students’ Scientific Society last year. 13. Did she study English at school? She didn`t study English at school. 14. Shall we have practical training at the end of the term? We shan`t have practical training at the end of the term. 15. Will she write a letter to her parents tomorrow?  She won`t write a letter to her parents tomorrow. 16. Did the doctor administer antibiotics in the treatment of pneumonia last month? The doctor didn`t administer antibiotics in the treatment of pneumonia last month. 17. Does the doctor seldom administer antibiotics to the poultry?  The doctor doesn`t seldom administer antibiotics to the poultry. 18. Will he visit us on Sunday? He won`t visit us on Sunday. 19. Will they return in a week? Won`t they stay there long? They won`t return in a week. They will not stay there long. 20. Do the students study pre-clinical subjects during the first two years? During the first two years the students don`t study pre-clinical subjects. 21. Do students learn to diagnose and treat different diseases? Students don`t learn to diagnose and treat different diseases. 22. Do young doctors specialize in one of the fields of medicine? Young doctors don`t specialize in one of the fields of medicine. 23. Does my fellow-student learn to carry out laboratory analyses? My fellow-student doesn`t learn to carry out laboratory analyses.