This descriptive-analytic research probing the findings of Traugatt (1978). Margolies & Crawford (2008). Lee & Ji (2014). and Duffy & Evans (2016) was conducted to investigate how Persian students use "time lines" of "tense" and "sequencing". https://jjepuadsctazvv.bloginwi.com/68598529/an-integrated-model-for-productivity-prediction-of-cyclic-steam-stimulation-with-horizontal-well