用现在完成时造一个英语特殊疑问句

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用现在完成时造一个英语特殊疑问句
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用现在完成时造一个英语特殊疑问句
用现在完成时造一个英语特殊疑问句

用现在完成时造一个英语特殊疑问句
how long since he has been in beijing

Has he been away from Beijing for 3 years?