高中英语句子转换Many international problems are being discussed at the UN conferenceMany international problems are _ _ at the UN conference

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高中英语句子转换Many international problems are being discussed at the UN conferenceMany international problems are _ _ at the UN conference
高中英语句子转换
Many international problems are being discussed at the UN conference
Many international problems are _ _ at the UN conference

高中英语句子转换Many international problems are being discussed at the UN conferenceMany international problems are _ _ at the UN conference
under discussion 表示在讨论中.

discussing

been discussed

under discussion

under discussion