Задание №27 — Словообразование

Лёгкое

It took 82 years to build the cathedral <?import namespace = m urn = "http://www.w3.org/1998/Math/MathML" implementation = "#MathPlayer" declareNamespace />–– Theodore Roosevelt laid the cornerstone in 1908, and the cathedral’s __________________ didn’t technically stop until 1990.

CONSTRUCT