Were people in the past smarter than now? Why/ why not?

1. This cup is dirty. These cups are dirty.

2. That biscuit was tasty. Those cups were tasty.

3. This hotel is very expensive but it's very nice. These hotels are very expensive but they are very nice.

4. There is a children's playground in the park. There are children's playgrounds.

5. That is a new supermarket in our town. Those are new supermarkets in our town.

6. It's a delicious lemon pie for dessert. There are delicious lemon pies for dessert.

7. It's a nice cotton dress for my niece. There are nice cotton dresses for my niece.

8. This man is an engineer. These men are engineers.

9. That woman is my sister. Those women are my sisters.

10. This child is my son. These children are my sons.

11. That goose is big. Those geese are big.

12. This mouse is white. These mice are white.

13. This man is a doctor. These men are doctors.

14. That woman is my cousin. Those women are my cousins. She is a teacher. They are teachers.

15. That girl is my niece. Those girls are my nieces

Объяснение:

1. Railways are to be (future - мод) completely automated to increase high-speed transportation. 2. A lot of changes are (present - вспом) taking place in modern science and technology. 3. Mobile cranes have (present - осн) a great lifting capacity. 4. The old hump yard had to be (future in the past - мод) modernized. 5. Computеrs are (pres - вспом) used to automate the train movement.
1. Железным дорогам предстоит полная автоматизация, чтобы увеличить скорость транспортировки. 2. Много изменений происходит в современной науке и технике. 3. Мобильные краны имеют большой  подъемную силу. 4. Старой сортировочной горке предстояла   модернизация. 5. Компьютеры используются для автоматизации движения поездов.