Question

【题目】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

Answer 1

【答案】B

【解析】句意：他姐姐1998年离家出走，从此杳无音信。根据句中since可知本题需用完成时，同时根据句意可知需用现在完成时的被动语态。故选B项。