Please check the following link and read it:
http://www.cic.gc.ca/english/information/applications/guides/CIT0002ETOC.asp
2. Language proof if you are 18-64 years of age:
Select one of the following types of proof to submit with your application:
Results of an accepted third-party test at the equivalent of Canadian Language Benchmark (CLB/NCLC) / Niveaux de compétence linguistique canadiensFootnote 1 level 4 or higher in speaking and listening either done previously for immigration purposes (acceptable even if expired) or done specifically for citizenship purposes. Test results from the following list are acceptable:
Canadian English Language Proficiency Index Program General Test (CELPIP-G) or the CELPIP-General LS (listening and speaking), not the academic version.
For tests taken after April 1, 2014, you must have achieved a score of level 4 or higher (up to 12) in listening and speaking.
For tests taken before April 1, 2014, you must have achieved a score of 2H or higher (i.e., 3L, 3H, 4L, 4H, 5L, or 5H) in listening and speaking.
International English Language Testing System (IELTS), general training, not the academic version You must have achieved a score of:
4.0 or higher in speaking, and
4.5 or higher in listening. (Please note: If the test was done before November 28, 2008, we will accept a level 4 or higher); or
