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— Has Sam finished his homework today?— I have no idea． He ______ it this morning.was doing.\x05A． did \x05B． has done\x05C． was doing \x05D． had done A为什么不对

分类: 作业答案 • 2021-12-19 11:52:14
问题描述：

— Has Sam finished his homework today?
— I have no idea． He ______ it this morning.was doing.\x05A． did \x05B． has done\x05C． was doing \x05D． had done A为什么不对

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