Exercise.1 Make the sentences negative and ask questions 1.By six o'clock on Sunday I had already cleaned the room. 2. I have already translated the text. 3. She had left by the 1st of June. 4. She had written only two letters by noon. 5. When we came to the station the train had already gone. 6. She had just made coffee when I arrived. 7. I hadn’t read the book by Saturday. 8. She thanked me for what I had done for her. 9. He took me to the kitchen and asked if I had had breakfast. 10. She knew I had spoken to her father. 11. When he came, I had been there for half an hour.

1. The animals are examined by the students every day. 2. The students examine the animals every day. 3. This cow was treated by our veterinarian last week. 4. Our veterinarian treated this cow last week. 5. Penicillin injections will be made by the veterinarian tomorrow. 6. The veterinarian will make penicillin injections tomorrow. 7. The students will treat sick animals next year. 8. Sick animals will be treated by the students next year. 9. Infectious diseases are caused by microbes. 10. Microbes cause infectious diseases. 11. These animals were operated on by our veterinarian last week.* 12. Our veterinarian operate on these animals last week.* 13. This disease is caused by a virus. 14. Viruses cause many diseases. 15. The sick calves will be isolated by the dairy men tomorrow. 16. The dairy men will isolate the sick calves tomorrow.

What will you do when далее следует любое придаточное предложение времени, но там главное, чтобы сказуемое(глагол) стояло в настоящем времени, хотя на русский язык, если в главном предложении уже сказуемое стоит в будущем времени (есть глагол will), то обе части предложения будут относиться к будущему времени.
What will you do when you finish school? - Чем будешь заниматься после окончания школы?
What will you do when you finish your work? - Чем будешь заниматься после окончания (своей) работы?
What will you do when you finish the translation?
Чем будешь заниматься после того, как закончишь перевод?
What will you do when you grow up? - Чем будешь заниматься, когда подрастёшь (вырастешь)?
What will you do when they come to your birthday party?  Что будете делать, когда они придут к тебе на день рождения? и т.д. аналогично стройте любые другие предложения).