- Good morning, doctor!
- Good morning!
- Dear doctor, I`ve got a toothache. What should I do?
- How many timesa day do youbrush your teeth?
- I brush my teeth three times a day.
- But what toothpaste do you use?
- I use a specialwhiteningtoothpaste.
- But you have to use a plain toothpaste.
- Oh, thank you. Goodbay.
- Goodbay.