Sagot :
Bonsoir
present perfect actif ou passif
actif = have/ has + participe passé
passif = have/has + been + participe passé
a- A dam has been built on the Colorado river.
b- A Navajo family has climbed the mountain to see the colossal dam that has just been completed.
c- Their homeland has been transformed. Sacred land has been flooded.
d- The Navajo have been dispossessed of their land. (the navajo have -pas "has" car c'est le peuple Navajo)
e- The three Native Americans represent the Navajo nation which has been overwhelmed by the power of technology and the modern world.
f- The white man has obviously invaded Indian territory and (has) consequently destroyed Native American culture and tradition.
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Bonne soirée☺☺☺