Does your sister often ____ the writing competition? A join B join in C take part D take part in
问题描述：
Does your sister often ____ the writing competition? A join B join in C take part D take part in
答
选D.
take part in sth 参加活动等.为什么不选B呢join in是加入社团，加入某个集体等。不是参加活动。