问题补充：
My sister as a secretary in her company for three years and now she to the manager of the sales department.
A. served; has been promoted
B. had served; has been promoted
C. has served; has promoted
D. was serving; has promoted
答案：
(答案→)A. served; has been promoted
B. had served; has been promoted
C. has served; has promoted
D. was serving; has promoted
解析：可联系答.案.网客服索取。
