Are you going to join a club?(英语单选)

问题描述:

Are you going to join a club?(英语单选)
Are you going to join a club?
(Yes.But there are so many kinds and I can't decide ---------- to join
A;what B:which C:how D:where

B:which
有好多种,不知道去哪种.why几个中选一个,用 which