单词拼写；根据句子意思，从方框中选用恰当的词或短语填空
| interested, fit, make medicine, ninth, in need, were planning, twelve |
1. I thought you a trip to Beijing at that time.
2. People kill animals because they want to from their bones.
3. Outdoor activities are good for us to keep .
4. At a very young age, he is in keeping pets.
5. We should try our best to help people .
6. I live on the floor of this building.
1. were planning 2. make medicine 3. fit
4. interested 5. in need 6. ninth