Amazing job today Chester~ You answered the questions well and you shared your insights and opinions clearly. You also used great vocabulary. There are just a few corrections especially the use of a/an/the. Overall, Keep up the Great job~

You said: Seoul is most concentrated city in Korea when it comes to population.

Correct: Seoul is the most concentrated city in Korea when it comes to population.

You said: Renewables could be a solution for next generation in the earth. 

Correct: Renewables could be a solution for the next generation on the earth. 

Better: Renewables could be a solution for the future generation. 

You said: ... safe energy in the Korea ...

Correct: ...safe energy in Korea ....

You said: I think it depends of weather and climate.

Correct: I think it will depend on the weather and the climate.

You said: All cars had the ceiling so we can put some solar panel.

Correct: All cars have a ceiling so we can put a solar panel.