题目内容：

My brother has been painting the new house all day and I don’t know when he can finish the work.
My brother has been painting the new house all day and I 三个空 when he can finish the work.改为同义句

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My brother has been painting the new house all day and I don’t know when he can finish the work.改为同义句 My brother has been painting the new house all day and I (have no idea) when he can finish t...