Question

— How clean and tidy your bedroom is!
—Thank you. It          every day.
A. cleans   B. is cleaned     C. was cleaned

Answer 1

B解析:
考查被动语态。It指代上句中的bedroom，it和clean构成被动关系，故用被动语态，由every day可知，该句是一般现在时，故用一般现在时的被动语态。