题目内容：
There _________ nothing more for discussion, the conference came to an end 20 minutes ear-lier.
A.be B.to be C.being D.to have been
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答案解析：
选择题：There _________ nothing more for discussion, the conference came to an end 20...
- 题目分类： 英语学科知识与教学能力
- 题目类型：选择题
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