. His sister left home in 1998, and_______since.
A.had not been heard of | B.had not heard of |
C.has not been heard of | D.has not heard of |
推荐套卷
. His sister left home in 1998, and_______since.
A.had not been heard of | B.had not heard of |
C.has not been heard of | D.has not heard of |