—Gladtohavemetyou,John.—Bye,Mary,________.—Sure.A.keepupwithB.keepoutC.ke

发布时间：2020-08-07 04:33:16

—Glad to have met you, John.—Bye, Mary, ________.—Sure.A.keep up withB.keep outC.keep in touchD.keep me off'

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C解析keep in touch意为“保持联系”．
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