Fill in the gaps in the sentences below with a preposition:

on from by as at on by

Model: Thank you for coming.

1. There are copies...........the table.

2. I'd like to start...........outlining the process.

3. It's good to have Professor Jackson here...........Stanford University.
4. We can discuss any questions...........the end of the seminar.
5. I want to focus...........the latest aircraft design.

6. ...........the end of this session, you'll be able to teach your staff how to use this program.

7. I'm talking to you today...........the designer of this new robotic system.