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.
