Say it better in English

Is the seat taken?

• Excuse me, is the seat taken?
• No, go ahead

Drop by

You left your book in my car. I will drop by your house and give it to you

I dropped by the camara store to pick up our photos

Can I put you on hold

A: Can I speak to the manager?

B: Can I put you on hold for a minute? I will see if He is here.