According to BoonLong (1999), using a structure / Interview detailed interview can provide guidance through the questionnaire. The interview can help to clarify the language and to record their answers and explanations. Moreover, the interview can follow any interesting new chapter of inquiry developed Dudley-Evans and St. John (1998) started the interview consists of questions that need to be carefully thought out and pre-selected. The interviewees are all important questions to ask, and can compare. Additional questions may be asked to track the response for the clarification and more details.