fill each blank with the correct prepostion:
1. I like on the fourth floor. He lives.... me on the fifth floor .
2. His books are thrown in disorder all.... the table.
3. He sits.... his bicycle, riding every where.
4. The plane flew.... Saigon.
5. Come here boy ! and stand .... the blackboard!
6. I also learn French ... English.
7. I have killed this tiger.... a gun.
8. When I arrive.... Dalat, I will come to see you .
9. Saigon lies..... Cholon and Gia Dinh.
10. She has not been here.... two months.