What is the purpose of opening our mouth as wide as possible and twisting our teeth?
举一反三
- What can mouth guard do for us Which of the following food or drink is not very harmful to our teeth A: Sweets. B: Biscuits. C: Vegetables. D: Coke.
- what should we do when we brush our teeth according to the conversation?
- My mother told me what it was the purpose of our visit.
- We brush our teeth every night as part of our .（老规矩，惯例）
- The purpose of our after-sales department is to ____ (service) our customers.