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

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问题 Jack______from home for two days now, and I am beginning to worry about his safety.

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

答案A

解析根据句意，杰克的失踪是过去发生的事实，且现在仍在持续中，因此要用现在完成进行时。

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考博英语

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

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Asthecityhasbecomeincreasingly______andpolluted,therehasbeenagrowingrealizationthatcertainactionisurgentlyne

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Itdemandsartisticskillforamanagerto______disputesamonghisemployees.

Theydon’twanttobeinvolvedinthedispute,sotheyexhibit______onsuchmatters.

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像梦中飘过一枝丁香地，我身旁飘过这女郎；她静默地远了，远了，到了颓圮的篱墙，走尽这雨巷。从社会斗争看，“雨巷”象征着什么?

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