His sister left home in 1998, and ____ since.
A. had not been heard of B. has not been heard of
C. had not heard of D. has not heard of
His sister left home in 1998, and ____ since.
A. had not been heard of B. has not been heard of
C. had not heard of D. has not heard of
B
句意: 他妹妹在1998年离开家, 从那以后就没了音讯。根据句意, 指的是过去离开以后, 到现在一直没音讯, 故用现在完成时; hear of与his sister在本句中为被动关系, 故用被动语态, 所以选B。