_____ you please open the door?

__________ you like to have dinner with me tonight?

__________ I speak to the Chief Councellor, please?

Children ________ be accompanied by an adult at the zoo.

You _____ not speak loudly in the hospital.

My son ___ be home by now. Where can he be?

They ________ hear him because he was whispering.

My teacher _____ speak four languages.

I liked this dress, I _____ buy it.