Greenpeace _____ against environmental degradation since 1971 when a small boat of volunteers and journalists _____ into the U.S. atomic test zone of Amchitka, Alaska.

Our focus has been on the most crucial worldwide threats to our planet’s biodiversity and environment. It’s also our responsibility to expose environmental criminals, and to challenge governments and corporations when they fail to act appropriately in order to protect our environment and our future.

Fonte:www.greenpeace.org

Choose the best verbal form to have the text completed, respectively: