III.Запишите и переведите предложения, обращая внимание на разные значения глаголов to be, to have, to do.
1.This polymer was being widely used as a building material.
2.In order to get reliable data the technologist will have to do calculations once more.
3.The lasers used to perform welding operations can be also applied for cutting metals.
4.The engineer did not refer to the new techniques applied at our plant.

vlada051199    2   24.04.2020 20:26    2