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The feeling of loneliness is very difficult().

A．Most competitors did not finish the race within two hours.
B．Most competitors were interested in the race.
C．Most competitors were trying to run as fast as they could.
D．Most competitors wanted to know if they could run 26 miles.

A．The History of Pop.
B．The Road to Music.
C．Pop Words.
D．About the Big Hits.