full transcript

## Unscramble the Blue Letters

And the governments all around the world are fighting their war on smog, but I wanted to make something within the now. So we decided to build the largest smog vacuum cleaner in the world. It sucks up polluted air, cleans it and then releases it. And we built the first one. So it scuks up 30,000 cubic mtrees per hour, caenls it on the nano level — the PM2.5, PM10 particles — using very little eitetclrciy, and then releases the clean air, so we have parks, plunoydargs, which are 55 to 75 pcenert more clean than the rest of the city.

## Open Cloze

And the governments all around the world are fighting their war on smog, but I wanted to make something within the now. So we decided to build the largest smog vacuum cleaner in the world. It sucks up polluted air, cleans it and then releases it. And we built the first one. So it _____ up 30,000 cubic ______ per hour, ______ it on the nano level — the PM2.5, PM10 particles — using very little ___________, and then releases the clean air, so we have parks, ___________, which are 55 to 75 _______ more clean than the rest of the city.

1. playgrounds
2. electricity
3. cleans
4. percent
5. meters
6. sucks

## Original Text

And the governments all around the world are fighting their war on smog, but I wanted to make something within the now. So we decided to build the largest smog vacuum cleaner in the world. It sucks up polluted air, cleans it and then releases it. And we built the first one. So it sucks up 30,000 cubic meters per hour, cleans it on the nano level — the PM2.5, PM10 particles — using very little electricity, and then releases the clean air, so we have parks, playgrounds, which are 55 to 75 percent more clean than the rest of the city.

## Frequently Occurring Word Combinations

### ngrams of length 2

collocation frequency
van gogh 2
people feel 2
feel connected 2
beijing smog 2
cubic meters 2
clean air 2
people showed 2

### ngrams of length 3

collocation frequency
people feel connected 2

## Important Words

1. air
2. build
3. built
4. city
5. clean
6. cleaner
7. cleans
8. cubic
9. decided
10. electricity
11. fighting
12. governments
13. hour
14. largest
15. level
16. meters
17. nano
18. parks
19. particles
20. percent
21. playgrounds
22. polluted
23. releases
24. rest
25. smog
26. sucks
27. vacuum
28. wanted
29. war
30. world