1. This engine <u>will have been installed</u> in our workshop by the end of the month. (Future Perfect Passive)
2. Our specialists <u>have made</u> great progress in different fields of science. (Present Perfect Active)
3. Electronics and television <u>had found</u> a wider application on railways by 2000. (Past Perfect Active)
4. The devices <u>were fixed</u> by the laboratory assistant. (Past Simple Passive)
I do not<span> smoke.</span>
Я не курю.
<span>He </span>did not<span> smoke.</span>
Он не курил.
<span>They </span>are not<span> expected to come.</span>
Не ожидается, что они придут.
<span>They </span>have not<span> been invited.</span>
Их не приглашали.
<span>She </span>has not<span> come.</span>
She has cleaned the house.
We have not worked hard.
I have visited them several times.
She has not finished yet.
They have talked to him.
Were you at home two days ago?
No, I was not. I was in the country.