Open the brackets in Past Continuous or Past Simple. 1. I …(see) her while she ….(do) yoga.
2. She … (lie) in bed when she … (hear) the door opened.
3. He … (walk) when he … (step) on a banana skin and …(fell).
4. When Mary … (get) off the train, she … (pull) her coat around her.
5. It … (rain) the whole day?
6. Suddenly, he …(hear) a noise.
7. Andy … (step) into the house and … (call) Jenifer.
8. While Mary … (watch) TV, I … (surf) the Internet.
9. When my mother ….. (come) home, I … (tidy) the house.
10. What you (see) when you …(come) into the room?
Объяснение: Electronic circuits are integral parts of nearly all the technological advances being made in our lives today. Television, radio, phones and computers immediately come to mind, but electronics are also used in automobiles, kitchen appliances, medical equipment and industrial controls. At the heart of these devices are active components, or components of the circuit that electronically control electron flow, like semiconductors. However, these devices could not function without much simpler, passive components that predate semiconductors by many decades. Unlike active components, passive components, such as resistors, capacitors and inductors, can't control the electron flow with electronic signals.