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Verbal·Standard English Conventions·Boundaries
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When the Greengate shopping mall, an indoor, temperature-controlled complex in Greensburg, Pennsylvania, was completed in 1965, the mall was just emerging as a new shopping concept. By the mid-1980s, American “mall culture” was at its peak, with hundreds of malls acting as        commercial, and cultural hubs throughout the US.
Which choice completes the text so that it conforms to the conventions of Standard English?
A
social and
B
social;
C
social
D
social,