His sister left home in 1998, and( )since
题型:单项选择题
问题:
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