How many countries took part in this event? More than 80 countries took part in this event.
What is the event about? The event is to save the world by not turning on any lights.
Did you and your family participate in this event? Why? Yes. Because we want to save the world.
What did you do/What did many Singaporeans do? They want to save the world. So they do.
Do you think it is an event that is worth observing? Give your reason/s Yes. Because if something happen to the earth, they will check.