3. Choose the correct answers. The light bulb
What would we do without electric lights? In the 1800s, light bulbs ' _by
different people, but none of them were good enough to sell until the right
material to go inside the bulb?
— Thomas Edison. Since then, electric lights
- around the world by billions of people.
The original designº— much, although more energy-efficient light bulbs
now in many parts of the world. However, in some countries, people can't
afford to use electricity. This fact encouraged U.S. teenager Ann Makosinski
to invent a new kind of light. This light ® __by electricity. It uses body heat
instead. But '_replaced by this new invention in the future? Probably not, but
light — and so this invention could definitely become popular in many parts
of the world.

1. a) are developed b) developed c) were developed d) is develop
2. a) were discovered by b) was discovered c) was discovered by d) were discovered
3. a) have used b) have been used c) have be used d) have use
4. a) isn't changed b) won't change c) hasn't been changed d) hasn't be changed
5. a) will be bought b) is bought c)are bought d) were bought
6. a) isn't powered b) wasn't powered c) hasn't powered
d) not powered
7. a) will be the light bulb b) will the light bulb be c) will the light bulb d) the light bulb
8. a) will be always needed b) always will be needed с) will be needed always d) will always be needed​

Hi, I'm an ordinary Russian boy, but I need your help.

My girlfriend considers you the best performer, and every day she listens to your masterpieces.

Soon her birthday is July 17th and I want to make it not forgotten.

I ask you on this happy day for her just to write that you congratulate her, she will be very happy.

out of gratitude unfortunately I can only say thank you if you help.

If you are ready to help please answer and I will drop a link to her account, all the best and good luck to your family

Объяснение:

1. There is A doll ON the sofa.

2. There is A ball UNDER the table.

3. There is A cat ON the armchair.

4. There is AN apple ON the table.

5. There is A dog UNDER the table.

6. There is AN umbrella ON the sofa.

7. There is A picture ON the wall.

8. There is A vase ON the table.

9. There is A robot ON the floor.

10. There is A car UNDER the armchair.

1. There is A ball ON, UNDER, BEHIND, NEXT TO, NEAR, IN FRONT OF the bed.

2. There is AN umbrella ON the floor.

3. There is A picture ON the wall.

4. There is AN apple ON, UNDER, BEHIND, NEXT TO, NEAR, IN FRONT OF the bed.

5. There is A bike ON the floor.

6. There is A vase ON the table.

7. There is A flower ON, UNDER, BEHIND, NEXT TO, NEAR, IN FRONT OF the sofa.

8. There is A chair IN FRONT OF, BEHIND, NEXT TO the table.

9. There is A lamp BETWEEN the sofa and the armchair

10. There is A robot ON, UNDER, BEHIND, NEXT TO, NEAR, IN FRONT OF the bed.

11. There is A mouse ON, UNDER, BEHIND, NEXT TO, NEAR, IN FRONT OF the chair.

12. There is A window NEXT TO, NEAR the sofa.

13. There is A flower IN the vase.

Объяснение:

Наверное правелно(