Txais cov cuab yeej siv qib siab ntawm cov lej tswj kev ua haujlwm thiab kev tsim khoom, Khaws nrog cov thev naus laus zis thiab txhim kho tsis tu ncua.
Cov khoom siv raw khoom zoo, advanced cov khoom siv thiab cov khoom siv kuaj xyuas kom ntseeg tau cov khoom zoo.Tus qauv qauv loj, yooj yim rau nruab.
Peb muaj qee qhov tseeb ntawm no
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Cov neeg ua haujlwm hauv tuam txhab
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