Nazca Lines "An Introduction To An Enigma"

Located in the arid Peruvian coastal plain in the south of Peru. These lines, which were scratched on the surface of the ground between 500 B.C. and A.D. 500, are among archaeology's greatest enigmas because of their quantity, nature, size and continuity. The geoglyphs depict living creatures, stylized plants and imaginary beings, as well as geometric figures several kilometres long. They are believed to have had ritual astronomical functions.

Past Perfect tense

Watch this video and write sentences using past perfect and past simple tense with these verbs:

Leave- arrive

Phone-Tell

Visit- go 

Complain-eat

Fall-knock at the door