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---Bob,youaresoabsent-minded.---Oh,I'msorry.Iattentiontoyou,MissShute.A.haven'tpaidB.wasn'tpayingC.amnotpayingD.couldn'thavepaid

题目详情
---Bob, you are so absent-minded.---Oh, I'm sorry.I ________ attention to you, Miss Shute.
A.haven't paid
B.wasn't paying
C.am not paying
D.couldn't have paid
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答案和解析
B