单选题 ______, you must show your ticket to go into the cinema.
A. No matter whoever you are B. Whoever you are
C. Whomever you are D. No matter who are you

【正确答案】 B
【答案解析】no matter who=whoever。A项中no matter和whoever重复了；whomever是错词；D项倒装错误，从句中不倒装。