题目内容
6. I'm on duty today. So I went to school earlier than before to clean the classroom. But to my surprise,
the classroom was very clean. (某人)has cleaned it. I wondered who did it.
6. Somebody
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题目内容
6. I'm on duty today. So I went to school earlier than before to clean the classroom. But to my surprise,
the classroom was very clean. (某人)has cleaned it. I wondered who did it.
6. Somebody