With so many Western companies, banks, and others setting up offices here, our telephone directory can not _____ and has to be updated every few days.
A.keep back | B.keep up | C.take back | D.take up |
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With so many Western companies, banks, and others setting up offices here, our telephone directory can not _____ and has to be updated every few days.
A.keep back | B.keep up | C.take back | D.take up |