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】本题考查动词的时态和语态。句意：他的妹妹从1998年离开家后就没有音讯了。slnce表示“从那以后”，在本句中应与现在完成时连用，所以应选择B项。