A：Hey，Maria，where are you going？

B：I'm going to the dentist this afternoon．

A：（1）　　

B：Nothing much． I only want to have my teeth cleaned．

A：Really？ My teeth always hurt after the dentist cleans them．

B：（2）　　

A：Just once a year．

B：Well，you should go once a month．

A：I know． But my teeth hurt after I see the dentist．

B：Because you don't often see the dentist．

A：（3）　　

B：Only brushing your teeth isn't enough．

A：OK． （4）　　

B：Dr． Johnson． He's really a good dentist．

A：（5）　　． I'll call him．

B：Yes． I'll give you his phone number later．

A．Who's your dentist？

B．What's the matter with you？

C．How often do you go to the dentist？

D．But I brush my teeth every day．

E． Do you have his phone number？