( ) ---How long has he been away? --- . A. Two hours before. B. Since two hours——青夏教育精英家教网—

摘要：( ) ---How long has he been away? --- . A. Two hours before. B. Since two hours. C. Two hours ago. D. For two hours.

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—______.

A. Two hours before　　　　　　　　　　　　　　 B.Since two hours

C. Two hours ago　　　　　　　　　　　　　　　　 D.For two hours

A. Two hours before　　　　　　　　　　 B. Since two hours

C. Two hours ago　　　　　　　　　　 D. For two hours

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