saithoca
Doçent
Museums began collecting rock-crystal skulls during the second half of the nineteenth century, when no scientific archaeological excavations had been ---- in Mexico and knowledge of real pre-Columbian artifacts was scarce.
A) unearthed
B) excavated
C) repented
D) extinguished
E) undertaken
A) unearthed
B) excavated
C) repented
D) extinguished
E) undertaken