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1 . As is estimated, more than 20 million shared bikes ______ into operation nationwide by 2025.
| A．will have been put | B．will have put | C．have been put | D．will be putting |
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2019-09-11更新
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433次组卷
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3卷引用：江苏省苏州市2019—2020学年高三上学期期期初调研（含听力）英语试题
