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题目内容
（华北水利-土木工程-大学英语（3））
3(5.0分)
There are more than fifty proposals ____ at the conference.
A)
discussed
B)
to be discussed
C)
discussing
D)
having been discussed
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