Ответ:

ех:2

1. Eart Festival takes over three days in June.

2. There are only 400 tickets available for Earth Fest.

3. This festival for children and young people aged five to twenty years old.

4.People can learn about saving energy and water, the importance of recycling, and how to make their city environmentally.

ex:3

The main idea of eco-festival : learn how to help our world and have a good time.