题目内容：
5.0
There are more than fifty proposals ____ at the conference.
A)
discussed
B)
to be discussed
C)
discussing
D)
having been discussed
参考答案：
选择题：5.0There are more than fifty proposals ____ at the
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- 题目类型：选择题
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5.0
There are more than fifty proposals ____ at the conference.
A)
discussed
B)
to be discussed
C)
discussing
D)
having been discussed