сделать Translate the sentences into Russian and determine the function of the Infinitive:
1. To walk is useful.
2. To know English means first of all to be able to speak English.
3. May I come in?
4. I don't know what to do.
5. We stopped to have a rest.
6. Who was the last to come?
7. I am waiting to be told the results.
8. This work must be finished today.
9. They were the last to be asked about it.
10. Do you want me to translate this text?
11. The earth was believed to be flat in ancient times.
12. That monument is supposed to have been erected by this architect.
13. I'd like you to meet my friend.
14. We expect her to come tomorrow.
Change the sentences and use Complex Subject:
1. It has been found out that dried fruits like dates, figs, raisins have a similar effect to sticky sweets because they are rich in concentrated sugars and get stuck to the teeth.
2. It is known that periodontal disease results from inflammation of the gum that gradually causes destruction of the bone supporting the teeth.
3. There appears to be tooth loss resulting from periodontal disease.
4. It is believed that water fluoridation is the most effective public health strategy for caries prevention.
5. It is likely that starchy foods that stick to the teeth cause decay.