Our classroom?every dayA.cleans B .is cleaning C.Is cleanedSo it is.It's our duty to keep it clean and tidy

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Ourclassroom?everydayA.cleansB.iscleaningC.IscleanedSoitis.It''sourdutytokeepitcleanandtidyOurclassro

Our classroom?every dayA.cleans B .is cleaning C.Is cleanedSo it is.It's our duty to keep it clean and tidy
Our classroom?every day
A.cleans B .is cleaning C.Is cleaned
So it is.It's our duty to keep it clean and tidy

Our classroom?every dayA.cleans B .is cleaning C.Is cleanedSo it is.It's our duty to keep it clean and tidy
答案 C.Is cleaned
every day这个词语表示一般现在时态,因此 B .is cleaning正在进行时态是不对的!另外这里的动作是被动的,教室是被人清洁干净的,因此选项被动语态!
翻译:我们的教室每天都被清洁,正是如此,我们的责任是保持清洁和干净