题目内容：

-----How clean and tidy your bedroom is -------thank you It_____every day A.cleans B.is cleaned
C.was cleaned D has cleaned

优质解答

选B.首先必须用被动态,因为It代表房间,理应被清洁.其次应该用一般现在时,因为时间状语是every day,每天.符合要求的只有B,is cleaned.