Dinah walked around the playground. изменить это предложение по временам! времена простое время длительное время) present perfect.(настоящее несовершённое время) и ещё the future simple tense. надо!

Past Simple.
Dinah walked around the playground.
Past Progressive.
Dinah was walking around the playground.
Present Perfect.
Dinah has walked around the playground.
Future Simple Tense.
Dinah will walk around the playground.