8.

1. He spends all his free time looking after his garden. (spend time/ money +Ving)

2. He prefers listening to pop music to watching TV after school. (prefer sth to sth: thích cái này hơn cái kia)

3. It's very interesting to make crafts or collect things like stamps and coins. 

4. We enjoy visiting museums when we have leisure time. ( enjoy+Ving)

5. I hate getting up early and prepare breakfast in the cold winter days. (hate+Ving)

9.

1. play -> to play (turn on my laptop to play: bật máy tính để chơi)

4. go shop -> go shopping (đi mua sắm)

4. buy -> buying/ to buy (like +to Vo/Ving)

5. has join -> has joined (HTHT has +Ved/v3)

7. improving -> improve (want to +Vo)