английский язык State the functions of GERUND in the following sen­ tences and translate them into Russian

1.Cutting stones and timbers became possible with the inven­ tion of tools.

2.By using industrial methods of construction the speed of con­ struction may be considerably increased.

3.Erecting tall buildings without using building mechanisms is now unthinkable.

4.Methods of designing structures are changing.

5.Up-to-date building is based upon using industrial methods ofwork.

6.What other materials are used for facing the external walls of a building?

7.The new method is very efficient and besides it plays an im­ portant role in saving materials.

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