Jack______from home for two days now, and I am beginning to worry about his safe

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问题 Jack______from home for two days now, and I am beginning to worry about his safety. （2003年考试真题）

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

答案 A

解析根据题意，宅格处应表示一个已经发生但尚未完成(杰克到现在还未回来)的动作，故应用现在完成进行时，A项正确。

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