填空题

The room is in a terrible mess; it ______ (can’t clean).

【参考答案】

can’t have been cleaned
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单项选择题
A．To hold the falling door.B．To look for the key.C．To hold the packages.D．To open the door.
A．To hold the falling door.
B．To look for the key.
C．To hold the packages.
D．To open the door.
填空题
Whom did he perform beforeHe performed before ______.
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