Where can I buy a good pair of shoes?
You can buy it at the shoe store on the corner
You can't find it at a shopping center.
Can you solve this problem?
Well,if it's easy ,I can.
I can't  speak Arabic because it's difficult.
Can you speak any oriental languages?
Yes,I can speak Japanese and Hindi.
Who can I speak to,about this problem?
You can speak to the manager.
You can't speak to his assisstant.