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题目内容
（国家开放大学管理英语3）
Involvement in community activities ______ an integral and inescapable part of senior managers. jobs.
选择一项：
A.
are seen as
B.
has been seen as
C.
has seen as
选择一项：
A.
are seen as
B.
has been seen as
C.
has seen as
参考答案