His sister left home in 1998, and_____since.

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问题 His sister left home in 1998, and_____since.

选项 A、had not been heard of
B、has not been heard of
C、had not heard of
D、has not heard of

答案B

解析 句意为:“他的妹妹从1998年就离开家了,到现在一直没有音信”。主语“his sister”和hear of之间是动宾关系,所以,排除C、D,从1998年到现在,应用现在完成时,故选B。
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