Hissisterlefthomein1998,and______since.A.hadnotbeenhea...

問題詳情：

 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

【回答】

B句意為：他的妹妹在1998年離開家，自從那時就沒有音訊了。用現在完成時的否定結構。

知識點：現在完成時及其被動式

題型：選擇題