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Constituting one of the earliest engineering techniques, ......... in Paleolithic time was
done in order to extend natural caves.
1) 2)
3) 4)
٠ %
tunnels were built
٠ %
which built tunnels
١٠٠ %
the building of tunnels
١ پاسخ
٠ %
tunnels whose building
٢,٩٨٧
٠
٠
١٠٠
١ پاسخ
مرتب سازی بر اساس:
پاسخ کاربر:
گزینهی سوم
٣٧,٥٥٤
٤٦
٨٦٨
٢٥٤
٩ ماه پیش