Open the brackets using the verb in the Present
Indefinite Active or Passive:
1. All the elements of a complete electronic circuit (combine) on a single chip of semiconductor material.

2. Electric current (measure) using a device called an ammeter.

3. The electron tubes (replace) by solid-state devices.

4. Electric currents (cause) Joule heating, which creates light in incandescent light bulbs.

5. The current (vary) to almost any desirable value by a transformer.

6. In electric circuits the charge (carry) by moving electrons in a wire.

7. The way the electric current flows through (call) a circuit.

8. Metals (conduct) electricity with ease.
9. Substances through which electricity easily (transmit) (call) conduc tors.

10. Direct current never changes its direction until the power (stop) or (switch off).

11. Copper (carry) the current more freely than iron.
Rubber (not/allow) electricity to flow freely.

12. Direct current may (flow) in a conductor such as a wire,

13. Electrical energy can (turn) into useful work.

14. Direct current (produce) by sources such as batteries, thermocouples or solar cells.

15. A beam of ions may (form) in a vacuum.

1)Маленький котёнок был очень пуглив. (Маленький - прил)

2)У мамы есть пушистая накидка. (пушистая - прил)

3)Зимой я ношу голубую толстовку (голубую - прил)

4)У моего брата дома есть большой матрац (большой - прил)

5)Большие вертолеты взлетали с точки Х (Большие-взлетали - прил)

6) Мой друг очень смешной (смешной - прил)

7) На день рождение мне подарили дорогой подарок (дорогой - прил)

8)Изумрудные ракушки переливаются на солнце (Изумрудные - прил)

9)У меня было много времени что бы собраться на ночную вечеринку (ночную - прил)

10) Вакуумные наушники мне купили вчера (Вакуумные - прил)

Объяснение:

A 1. I live in Kiev. 2. I don't learn German, I learn English. 3. Do you translate English texts at home? 4. We don't speak Russian. 5. Do you write dictation every day? 6. They come to the office every morning. 7. A lot of my friends walk at the city center. 8. He isn't a worker. He is an engineer. 9. Do you go there after the lessons?

B 1. Where do you work? - I work in a factory. 2. What do your sons study English or French? 3. When do you study English? - In the evening. 4. What do you read every morning? - I read newspapers. 5. Where do they walk every evening? 6. Do you do a lot of things in class? - No. 7. Do they speak English? - Yes. 8. Do your sisters live in Moscow? - No. 9. What language do your friends study? 10. What language do you usually speak in class?