I want to tell you about vertical farms. Vertical farming was invented by scientists. I think it's a good idea, because it saves space, as is impossible to place a lot of vegetables or fruit in small areas. It's very convinient to take care of. To find alternative ways to obtain more agricultural land has been a real challenge for scientists. Plants are susceptible to invasions by small parasitic insects. These farms can be a solution for people whose land is barren. Any person in society can make a small farm on the balcony. The plants will be fed with direct sunlight. Large farms are equipped with air turbines.
Объяснение:
6. Mum was making pizza for lunch when she realised that she has not any cheese. We had sandwiches instead!
7. I thinking of cooking chicken on Sunday. What do you think?
8. Bill was not a chef, but he worked at a restaurant in town at the moment.
9. Pete and Lucy spent last weekend with us.
10. Were the children enjoying the party on Saturday?
11. Sam has eight sisters! I have only got one.
12. Carrie was go to the doctor's yesterday and he told her about the importance of a well-balanced diet.
В 11 (во втором предложении) не уверен.