Since he was made ___ director of the sales department,there __a rapid increase in sales
问题描述：
Since he was made ___ director of the sales department,there __a rapid increase in sales
A.a ; was B.the; has been C./;was D./;has been
答
B
_the__ director of the sales department 后面是特定职务,应当加定冠词
there _has been_a rapid increase in sales 有前面since提示完成时可不可以选C我觉得B比较好（到了口语的话其实不会区分很严格），因为后面强调“自从怎样以来”的一个延续状态。