估計是移民官懷疑你住的時間不夠，你有沒有收到過補材料通知之類的？
When a citizenship officer is not satisfied that the applicant has met the physical presence requirements for citizenship, the file is prepared for the review by a citizenship judge. See the instructions on residence.
Citizenship judges reviews the file to determine if there is sufficient evidence to render a decision. During this review, the judge may request the following:
- additional information or documentation to assist in the decision-making; or
- in-person hearing with the applicant.
The citizenship judge has the option of approving or refusing an application without the personal appearance of the applicant. This can be done based upon the information and evidence already on file or following a request for additional information or documentation.
http://www.cic.gc.ca/english/resources/tools/cit/admin/decision/judge.asp