阅读下面的短文，根据每个空格中所给的词首字母填入适当的词，使短文意思完整。
On Easter, April 9th in 1939, more than 75,000 people came to the Lincoln Memorial (林肯纪念馆)
in Washington, D.C. They heard the famous African-American singer Marian Anderson g           a free
open-air concert.
Anderson had planned to sing at Washington's Constitution Hall (华盛顿宪法大厅), but a political
organization that helped manage the concert hall refused her the right to perform because she was
b            . With the help o            the first lady Eleanor Roosevelt, Anderson's performance at the
Lincoln Memorial m            people greatly aware (意识到) of the p            of racial discrimination
(种族歧视) in America.
Anderson had tired hard out of a p            childhood in South Philadelphia to become a world
f           singer. Even after her great appearance at the Lincoln Memorial in 1939, it was not u            
1955 that she became the first African-American to be i            to perform at New York's Metropolitan
Opera House (纽约大都会歌剧院) Anderson died in Portland, Oregon, o            April 8, 1993.

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