Нужна помощь с типами условных предложений. Измените предложения согласно образцам:

If I were free, I should help you. Were I free, I should help you.
If he had known about the lecture, he would have come. Had he known about the lecture, he would have come.

1. If it were possible, we should begin this work at once.
2. If he had had all the necessary books, he would have made his report in time.
3. If the books had been available in our library, we could have done this work much earlier.
4. If there were no computers, space flights would be impossible.
5. If drivers were more attentive while driving, there would be less accidents on the road.

Заранее благодарю!

1. Were it possible, we should begin this work at once.
2. Had he had all the necessary books, he would have made his report in time.
3. Had the books been available in library, we could have done this work.
4. Were there no computers, space flights would be impossible.
5. Were drivers more attentive while driving, there would be less accidents on the road.