Пожалуйста помогите!!!
Заполните пробелы с соответствующими формами из правой колонке
1. The houses ... many years ago are not as convenient as the modern ones. 
2. What is the number of apartment houses ... in the past few years? 
3. The number of apartment houses ... for the population of Moscow is rapidly growing. 
4. The workers ... this house used new construction methods. 
5. At the conference they discussed new methods ... in building. 
6. The new methods ... in the building of houses proved more effective. 
7. Here are some samples of the products of this plant ... to different parts of the country. 
8. These are the samples of products ... last month.

building 
being built 
built 
used 
using 
sent 
sending 
being sent