... thesis was conducted in a state upper-secondary school inCao Bang province. Economically, the area where the school is located is underdeveloped,with 93.7 per cent of the population being ethnic ... theappropriateness between the method chosen and the problem stated, the researcher’spersonal experience and skills, which may be assisted by the best choice of method, andthe audience to whom the ... countries in the neighbourhood (Canh andBarnard, 2009), it has been rhetorical in the whole school system of the country, especiallyat the general education level. However, scholars and researchers...