1.Windows were pushed open,furniture was put into

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A. place  动词短语put into place：安置好了.没办法解释,只能死记硬背.
C. that    其后是主语it的补语.
A. It         不定式to  的代主语.
C. besides 而且之意.注意与beside的不同用法.
B. occupied   动词短语be occupied with 忙于.没办法解释,只能死记硬背.
D. on which   动词短语    stuck on 着迷于
C. did   根据前面的could,只有此选项.
B. collected   较之save似乎更搭配.
待续======以下答案可供参考======
供参考答案1:
C 摆放整齐 C 强调句结构 A 形式主语 C 而且 表递进 D be filled with固定结构
D stuck on 定语从句 which指代物 C and连接并列时态 B 收集起来 符合句意
A 加强语气