介词填空1please fill _____the form on the teacher's desk.2can yo

介词填空
1please fill _____the form on the teacher's desk.
2can you finish doing the work_____an hour?
3you can send the photos to me____mail.
4if you have any question ,please contact us _______27583118.
5my elder sister provided me_____food and drinks for the trip.
6would you like to make friends_____the young man