今天收到一封CRA的一封来信,来信的内容是"We cannot calculate the amount of the GST/HSTC to which you maybe entitled for July 2015 to April 2016. If you provide the following information, will process it and inform you the result: -your world income, with the amount converted to Canadian dollars, for the period in 2014 before you came to Canada" . L0 j$ D1 c! e8 @" e- P, E( f+ d * B `1 x2 J$ g8 D去年九月份我才来屯里留学的,之前一直在国内上班,应该有5万左右(人民币)的工资。我需要如何回复他们?可以直接在CRA的网上账户操作么?还是必须通过别的方法(寄信,传真或者打电话)跟他们联系?