Question

7. Найдите в предложениях инфинитив.
1. It has been decided to build a road around the village. 2. They want the new device to be produced by February. 3. The purpose of this book is to describe certain properties of metals. 4. To work in building construction was the dream of his life. 5. The experiment to be carried out is of great importance for our research. 6. To solve this problem we had to involve experts. 7. The engineer allowed the technology to be used. 8. He heard the engine start after a loud click. 9. Concrete is strong in its resistance to loads trying to crush it. 10. They made construction workers wear the personal protective equipment.

Answer 1

To solve
 to build
to be produced
to describe
To work
to be carried и т. д.
Думаю, принцип понятен

Answer 2

1 to build 
2 to be
3 to describe
4 To work
5  to be
6 To solve 
7 to be
8 start
9 to crush
10 wear