题目内容：
Jack___________ from home for two days now, and I am beginning to worry about his safety.
A．has been missing B．has been missed
C．had been missing
D．was missed
参考答案：
答案解析：
单选题：Jack___________ from home for two days now, and I am beginni
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B．has been missed
C．had been missing
D．was missed