用适当的介词或副词填空。

1. I am going ____ a journey ____ my new bike, but she'll go ____ bus.

2. Today my grandpa wants to go shopping ____ foot instead ____ by bus.

3. Towards evening, we put ____ our tent ____ the foot of the mountain.

4. What's the difference ____ temperature ____ the day and the night?

5. His parents are very strict ____ him ____ his studies.

6. ____ her childhood, she has dreamed ____ having a chance to climb the Great Wall.

7. Of course, my sister hadn't looked ____ a map; she didn't care ____ details.

8. ____ this point they had to change their heavy clothes ____ light ones.