II. Put the verbs in brackets into the Present Perfect, Past Simple or Present Perfect Continuous: 1) They ___ (buy) a pet dog. It's cute! 2) Mum ___ (borrow) this book a week ago. 3) Sam ___ (learn) Spanish for a year.

1. They have bought a pet dog. It’s cute!
2. Mum borrowed this book a week ago.
3. Sam has been learning Spanish for a year.

Present Perfect is used for a recent result, Past Simple with a finished past time, and Present Perfect Continuous for an action continuing over a period up to the present.