Dưới đây là các câu viết lại theo phân gợi ý:

1. That old man has lived here for 10 years.
→ That old man moved **here 10 years ago**.

2. She hasn't texted me since the party.
→ She stopped **texting me after the party**.

3. My sister started playing the guitar when she was 15.
→ My sister has **been playing the guitar since she was 15**.