Ответ:

1. We decorated our house on the 31-st of December last year.

2. We bought a new year tree on the 31-st of December last year.

3. We prepared gifts for each other on the 31-st of December last year.

4. We wrote special greeting cards on the 31-st of December last year.

5. We sent e-mails to our friends on the 31-st of December last year.

6. We stayed at home on the 31-st of December last year.

7. We wished each other happy New Year on the 31-st of December last year.

8. We watched television on the 31-st of December last year.

9. We went out , song and danced  on the 31-st of December last year.

10. We phoned friends and neighbours on the 31-st of December last year.

Объяснение: