ответ:1.We haven't seen her since the time she came out of the office 2. I've been in this house for about seven years, but I want to move. live 3. to know this family for five years. They met in Kiev five years ago. 4. he studied German for two years, but then decided to drop out. 5. I'm working in this office since September. 6. His baby was sick for almost two weeks. 7. I can talk to the Director? I'm sorry, he's out. He came out a few minutes ago. 8. My friend called me today? No, she still hasn't called .9. This student does not know the answer, because he has not learned the lesson 10. Why haven't you done your homework? 11. This is the most intelligent person I have ever met. 12. Lately, I have not received from him any PI -. 13. I haven't heard anything about them since they left Kyiv. 14. Today you listened to the news on the radio? 15. He doesn't read very much lately 16. Can anyone give me a notebook? I left my house. 17. How many times have you been to the cinema this year? 18. I just found out these people 19. We are here with five hours and 20. I Know that he's still not back from a trip
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Объяснение:
1) Each person has an upper and lower jaw.
2) the first set of teeth appears in a child at 3-6 months.
3) the Second permanent set of teeth appears in 13-14 years.
4) you should visit the dentist twice a year to prevent dental caries.
5) the oral Cavity, gums and teeth should always be in order.