Поставьте модальный глагол или его эквивалент в нужном времени (Present, Past or Future).
1. The role and importance of an automobile arose from the fact that it (can) move along roads without rails.
2. Changes in agricultural practices often (to need) to make a ma- chine adaptable to increase its effectiveness.
3. From ancient times a man (have to) use proper equipment for high crop production.
4. In future the automotive engineer (may) know much more than just mechanical engineering.
5. The design engineer (must) always know enough about the manufacturing capabilities of the supplier.

She says that she is shorthanded (she said that she was shorthanded)
Mike says that he is not lying (Mike said that he wasn't lying)
Mother says that children have been playing for 2 hours (mother said that children had been playing for 2 hours)
He replies that he'll have to sleep on it (he replied that he would have to sleep on it
He tells Mary that he doesn't stretch the truth (he told Mary that he didn't stretch the truth)
Peter says to his friends that they have bought a new car (Peter said to his friends that they had bought a new car)
Maggie says to her friend that she has never seen this man before in her life (Maggie said to her friend that she had never seen that man before in her life)
The teacher says to her students that next year he is going to visit England (the teacher said to her students that next year he was going to visit England

I believe that conflicts in the family occur due to a misunderstanding between parents and children.Parents forbid their children to walk in the evening, are forced to study a lot. Children do not obey their parents, sometimes improve on them voice. Despite all
quarrels, parents and children love each other. I believe that no quarrels in the family,
need to parents paid more attention to their children, and children respected their
the parents.
Often conflicts occur between political parties and the state. In my
opinion this is due to a power struggle. Alas, we can't do anything
can.