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1 . The conference ________ to discuss how to bring infections down to zero next week is of great significance.
| A．to hold | B．having been held | C．to be held | D．being held |
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2021-05-17更新
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974次组卷
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2卷引用：天津市武清区杨村一中2021年春季学期高二下学期6月月考英语试卷
