Вот ответ:
1. When did the project appear?
2. Where did the project appear?
3. What do the volunteers of the project do?
4. Where do the divers take part?
5. What do the divers do on an International Cleaning Day?
Вот ответ:
1. When did the project appear?
2. Where did the project appear?
3. What do the volunteers of the project do?
4. Where do the divers take part?
5. What do the divers do on an International Cleaning Day?