问题描述：
He died _____ his life's work still unfinished .A)before B)but C)with D)while
He died _____ his life's work still unfinished .
A)before
B)but
C)with
D)while
He died _____ his life's work still unfinished .
A)before
B)but
C)with
D)while
问题解答：
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