Помогите!!!!!!!!!!!!!

1. We have done our work in time.
Мы сделали нашу работу вовремя.
have done-Раst Indеfinitе Active
2. The meeting was attended by representatives of different organizations.
Встреча была посещена представителями различных организаций.
was attended by-Passive, Present Indefinite
3. When I entered the hall, the professor had already been speaking for ten minutes
Когда я вошел в зал, профессор уже говорил за десять минут.
entered the hall-Active voice, Past Perfect
already been-Passive Voice, Past Indefinite
правильно?

Почти;)
1. В каком времени используется have и глагол в третьей форме?
2. Was — переведено верно, но разве это Present?
3. Про профессора: Past Perfect Continuous: had been Ving, профессор сам говорил или его говорили? Актив или пассив?
Вошел в зал: какое время образуется при помощи окончния ed?

Добрый день. Мне очень нужна помощь. Мне нужно определить видовременную форму и залог у глагола-сказуемого.
1 The property of this material changes.
2 Many inventions were made Edison.
3 The lesson will start in 5 minutes.
4 He has not read the discription of the labratore work.

Помогите пожалуйста!!!
Определите видовременные формы глаголов в следующих предложениях.

1. Не has already finished to read this book. You may take it. 2. The lecture was attended by many students. 3. The picture is looked at with great interest. 4. I was told to come at once. 5. Much attention will be paid to this research work. 6. He said that they had already returned home. 7. I’ll be dressed in a minute. 8. The door is locked and we can’t get in. 9. Was your poem published?