My nephew ______ from home for three days now, and I am beginning to worry about his safety.

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问题 My nephew ______ from home for three days now, and I am beginning to worry about his safety.

选项 A、has been missed
B、was missed
C、has been missing
D、had been missing

答案C

解析 miss一词的一ing形式和-ed形式的区别及时态一致。missing为形容词,表示“(人或物)下落不明,失踪的”;missed是过去分词形式,与be动词连用,为被动关系,表示“被错过的”。依句意,此处应取“失踪的”这一含义,排除A、B。由句中的时间状语for three days now可确定用现在完成时,因此选项C正确。
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