Fill in the gaps with recently, yet, already, just or since.
1.They have ... determined the main properties of the substance.
2. I have know this scientist ... 1970.
3. They have ... applied new methods in their research.
4. Our country hasn't developed info a powerful state ...
5. The introduction of the new equipment has increased production.
6. Overvoltages which we have ... described rarely exceed three to five times the normal phase to neutral "peak" voltage of the system.
7. Computer technology has ... made household appliances smarter and feature richer.
8. The light bulb has undergone various improvements Edison's work.

kanat9809    1   18.05.2021 13:17    0