The answers:
1. Tom prefers going walking with his friend, in her free time.
2. Her sister prefers taking part in these activities to listening to music.
3. I prefer watching TV to listening to music.
4. Would you like to play a game of chess with me tonight ?
5. Nam didn't go to school yesterday because he had a headache.
8. The Robinsons visited hcm city a few weeks ago.
9. Did you feel tired after working hard ?
10. Were they absent from class yesterday ?
cho mik ctlhn nha!!!
