“…The samples adopted had been assessed by the IELTS examiners and the scores of 4.5 and 6.5 were given to the letter and essay writing tasks, respectively. Lee (2003), Lee (2008Lee ( , 2009), Montgomery and Baker (2007), Junqueira and Payant (2015), Valmori and De Costa (2016), Nassaji (2012), Tavakoli and Howard (2012), Tavakoli (2015), and Crusan et al (2016). Also, we used the WCF typologies suggested by Ellis (2009).…”