Could you tell me how long the football club?A. you have joined B. have you joinedC. you

问题补充：

Could you tell me how long the football club?

A. you have joined

B. have you joined

C. you have been in

D. have you been in

答案：

A. you have joined

B. have you joined

(答案→)C. you have been in

D. have you been in

解析：该句是一个含有宾语从句的句子，从句必须用陈述语序，故排除B、D；join不能与表示一段时间的时间状语连用，故答案选C。