to [take] responsibility

https://tts.langeek.co/read?text=dG8gdGFrZSByZXNwb25zaWJpbGl0eQ&hash=6e486caf3d52ab25ef5c871b7100f1a957cfa84b&lang=en&cache-only=0&driver=googletts

Here you will find the vocabulary from Unit 2 - Preview in the Summit 2A coursebook, such as "admit", "blame", "promise", etc.