His sister left home in 2009, and＿＿since.
A. had not been heard of
B. has not been heard of
C. had not heard of
D. has not heard of
网友回答
A. had not been heard of
(答案→)B. has not been heard of
C. had not heard of
D. has not heard of
解析：考查时态语态，时间是副词since“自从那时”，用现在完成时，而且his sister和hear of是被动关系，所以选B，句意是：他姐姐2009年离开家，自从那时一直没有音讯。