--This yard is so clean today and everything looks fine. --I didn't notice that. It's clear someon--This yard is so cleantoday and everything looks fine. --Ididn'tnotice that. It's clear someone it. A. cleans B.cleaned C.has cleaned高

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--This yard is so clean today and everything looks fine. --I didn't notice that. It's clear someon--This yard is so cleantoday and everything looks fine. --Ididn'tnotice that. It's clear someone it. A. cleans B.cleaned C.has cleaned高
--This yard is so clean today and everything looks fine. --I didn't notice that. It's clear someon
--This yard is so cleantoday and everything looks fine.
--Ididn'tnotice that. It's clear someone it.
A. cleans B.cleaned C.has cleaned
高手赐教谢谢

--This yard is so clean today and everything looks fine. --I didn't notice that. It's clear someon--This yard is so cleantoday and everything looks fine. --Ididn'tnotice that. It's clear someone it. A. cleans B.cleaned C.has cleaned高
选C
题意:--院子今天非常干净,一切看起来都很好.
--我没注意,很明显有人清洁过.
根据题意,是有人已经清理过了,所以现在非常干净,现在完成时强调对现在的影响.

C
这里强调的是院子里现在很干净,是说现在的情况,所以要用现在完成时。

C
现在完成时,强调到目前为止,动作已发生。