选择合适的介词填空。(可重复选择)

in       on       at       to       for       with

1. My mother bought a new bike ________ me.
2. Daming put a cup ________ his head.
3. Please write ________ me soon.
4. Daming is in New York ________ his cousin Simon.
5. The birds are singing ________ the tree.
6. Look ________ this picture. The boys are playing ________ a little dog.
7. My teacher gives a book ________ me.
8. —Good luck ________ the future!
—Thank you.