1. YouTube was invented by Sasha Chen, Chad Hurley and Jawed Karim in 2005.

2. The first video was uploaded on April 23, 2005.

3. The video was called/is called Me at the zoo.

4. In (2006 , YouTube was bought by Google.

5. Over 6 billion hours are spent watching videos on YouTube a month.

6. One hundred hours of video are uploaded every minute.

1. have been eaten

2. have been sold

3. Have (they ever) banned

4. have been known

5. have been taken

6. has been made

1. in the cities of the future robot-driven cars will be used

2. Our streets will no longer be filled with traffic jams.

3. People will be sent personalized messages by/from billboards.

4. Everything in a city will be connected by a network of computers.

5. The streets will be filled by buildings as tall as 85 floors.

6. Solar energy will be used in every household.

1. are wasted

2. will be reduced

3. has been started

4. are asked

5. are made

6. are sent

1. have been eaten

2. has been known

3. have been created

4. has been celebrated

5. has been made

6. has been produced

1. city areas will be occupied by 80% of the world’s population.

2. only electric cars will be driven in the cities of the future.

3. The air will no longer be polluted by fumes from cars.

4. Buildings will be powered by solar paint.

5. Everything in future cities will be run by technology.

6. Very tall buildings will be built (by people)

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