“…The chatbots that operated as teaching assistants provided academic knowledge ([ 41 , [48] , [49] , [50] ]), offered formative feedback to EFL learners [ 45 ], and enabled scaffolded learning ([ 22 , 27 , 31 , 42 , 51 ]). Chatbots also acted as learning partners by chatting and interacting with learners through voice ([ 26 , 28 , 52 , 47 , 53 ]) and text ([ 27 , 41 ]). The role of the chatbot as a personal tutor was to provide valuable language learning contexts; applications such as Duolingo, Mondly, Andy, and SIRI were used as personal tutors ([ 25 , 43 , 44 ]).…”