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题目内容
（兰州交通大学-土木工程-大学英语3）
More than one sentence _______ necessary to illustrate the usage of this word.
得分/总分
A.
being
B.
was
C.
are
D.
is
得分/总分
A.
being
B.
was
C.
are
D.
is
参考答案
