题目内容
.
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
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题目内容
.
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