In recent years, researchers have been fascinated by the discovery of ancient inks used in manuscripts and artworks. These inks, some of which are over 2000 years old, have turned 1 __ in various archaeological sites around the world.
up
The composition of these inks often 2 __ clues about the methods and materials used by ancient civilizations.
gives
One particular ink found in an Egyptian tomb was made using a mixture of soot and gum. It had been blended with a unique metal, which 3 __ that it was used for special documents or ceremonial purposes.
suggests
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