题目内容
【题目】They cleaned the room last weekend. (变为否定句)
They ________ ________ the room last weekend.
【答案】didn't clean
【解析】
略
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题目内容
【题目】They cleaned the room last weekend. (变为否定句)
They ________ ________ the room last weekend.
【答案】didn't clean
【解析】
略