Раскройте скобки и выберите глагол в требуемом залоге: активном или пассивном.
1. Electronic devices (help; are helped) people discover new phenomena of nature.
2. The transistor (replaced; was replaced) by vacuum tubes thanks to its numerous advantages.
3. Due to transistors all circuit functions (carried out; were carried out) inside semiconductors.
4. Electronic devices (use; are used) in scientific research.
5. Before the invention of the transistor its function (performed; was performed) by vacuum tubes.
6. The reliability of electronic systems (connect; is connected) with the number of discrete components.
7. Semiconductor integrated circuits (helped; were helped) to increase reliability of devices.
8. New types of integrated circuits (have developed; have been developed) lately.

ПОМОГИТЕ ПОЖАЛУЙСТА!

1 help 2 was replaced3 were carried out4 are used5 was performed 6 is connected7 helped8 have been developed