题目内容
【题目】—Has Li Lei finished his work today?
—I have no idea, but he __________ (做实验)when I saw him this morning,(conduct)
【答案】见解析
【解析】was conducting the experiment
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题目内容
【题目】—Has Li Lei finished his work today?
—I have no idea, but he __________ (做实验)when I saw him this morning,(conduct)
【答案】见解析
【解析】was conducting the experiment