Why the rea of rainforests going down now?
What problems are there?​

1. Concrete is the main building material. Цемент - это основной строительный материал.
2. The plant doesn't produce more than 500 units of finished products a month. Растение не производит больше 500 единиц готового продукта в месяц.
3. Why do enterprises install solar panels? Почему предприятия устанавливают солнечные панели (батареи)?
4. Iron rust is in contact with air and water. Железная ржавчина вступает в контакт с воздухом и водой.
5. The machine wasn't working because the transmission system was out of order. Машина не работала, потому что система передачи вышла из строя.

1. b) is, it
2. c) , ,
3. d) the other
4. a) hardly, lately
5. b) have not seen, did you see, met, think, changed
6. d) published, has become
7. a) had met
8. d) is, will go
9. b) are starting, will have finished
10. a) is being built
11. a) said, was, would not go
12. a) not to be
13. b) to be starting, to get wet through
14. b) trying, to improve
15. b) having worked
16. c) on seeing, come in, having welcomed, as usual
17. b) must have been
18. b) should have done
19. c) may come
20. b) his, such, didn’t he
21. b) to address, knew
22. a) in, on, as, until, by
23. a) the, , the, the