She ____ the house the whole morning but...

She ____ the house the whole morning but it seems to be at least an hour before she finishes it.

A．has been cleaning

B．cleaned

C．had cleaned

D．has cleaned

A 【解析】考察时态，根据the whole morning可知，该句表示一直在干某事，所以选择完成进行时句意为她一个早上都在打扫房间，但是看起来至少还有一个小时她才能结束。

考点分析：

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