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Manurung DS, Lestari L, Manik ME. STUDENTS’ ERRORS ANALYSIS IN CHANGING ACTIVE VOICE INTO PASSIVE VOICE OF SIMPLE PRESENT AND PAST TENSE (A CASE STUDY AT EIGHTH GRADE OF SMP SWASTA PUTERI SION MEDAN). EJI [Internet]. 2020 Jan. 16 [cited 2024 Nov. 25];4(1):134-4. Available from: https://ejournal-fkip.unisi.ac.id/eji/article/view/859