SMT-past simple vs present perfect vs past perfect and continuous forms

SMT-past simple vs present perfect vs past perfect and continuous forms
SMT-past simple vs present perfect vs past perfect and continuous forms
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คำแนะนำของผู้เขียน

Students choose a sample sentence in simple present to adapt in all six forms (ungraded); examples are given (hidden); students then are invited to evaluate themselves; the entire task is not graded, automatically.