Question

--What a dean and bright classroom， isn’t it？

--Yes，it’s always clean and bright because it 　　　 every day．

　 A． cleans　　　　 B． cleaned　 　　　C． is cleaned　　　 D． was cleaned

Answer 1

答案C

解析：根据句意，教室干净整洁是因为它每天被打扫，故用被动语态，又因every day是一般现在时的标志，故答案选Ｃ。