Task 1 1) people who do not have a home to live in
2) a source of power that makes e.g. a computer work
3) public transportation which is under the ground
4) an extremely strong wind plus bad weather
5) an organization that helps people
6) long-term change of weather conditions
someone who works/helps and does not want money for it
...
Electricity
Subway/Metro
Storm
Charity/Non-profit organization
Climate change
Volunteer