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Whichsentenceisright?A.HisfatherhasgonetoHongKongtwice.B.Wherehaveyoubeenthesedays?C.Idon'tknowwhatthematterwaswrongwithhim.D.Kate'sbrotherhasjoinedthearmysincethreemonths.

题目详情
Which sentence is right?
A.His father has gone to HongKong twice.
B.Where have you been these days?
C.I don't know what the matter was wrong with him.
D.Kate's brother has joined the army since three months.
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答案和解析
B是正确的.