.
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 |
推荐套卷
.
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 |