Many people nowadays have to (1) ___________ false teeth when they are (2) _____________ . The reason is that tooth (3) __________ increases a lot. The amount of (4) ____________ on our food also increases. Doctors and dentists now know that sugar is the chief (5) ______________ of tooth decay. Eskimos’ (6) ___________ , for example, started to decay when they began to (7) ________ sweeter food. Long ago doctors didn’t not like to (8) _________ people’s teeth. Barbers and blacksmiths looked after people’s teeth and (9) __________ them out when they decayed. Some people (10) __________ toothache was a punishment from the Gods.

ĐÁP ÁN:

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1. wear

2. middle – age

3. decay

4. sugar

5. cause

6. teeth

7. eat

8. treat

9. pulled

10. thought