Exercise 17:Open the brackets using the verbs in the required form.

1. A denture (make) by the orthopedist when we entered the room. 2. A lecture about the tooth anatomy (deliver) by the professor. 3. Each tooth (divide) into three parts. 4. This patient (examine) by a highly qualified specialist last week. 5. He (examine) by a dentist now. 6. The case history (fill) in when students entered the surgery. 7. Great attention (pay) to the past dental history. 8. The following information (include) in the case history: present complaints, details of symptoms, dental history, medical history, family history. 9. We humans (bless) with fourteen deciduous teeth and thirty two permanent teeth. 10. It (recommend) that you visit your dentist every six months. 11 Comprehensive examinations (perform) to determine any changes in dental and health status since their previous visit.



Exercise 18:Transform the following sentences into Passive Voice.

1. A doctor usually determines the character of symptoms over the period. 2. A dentist prescribed and carried out appropriate treatment. 3. The patient will give the doctor all available information. 4. This stomatologist is filling in the case history now. 5. I was doing my home-task at 7 p. m. yesterday.



Exercise 19:Transform the following sentences into Passive Voice.

1. The doctor will have cured the carious teeth by the next week. 2. The acid attacked the susceptible tooth surface. 1. He had brought some English books by 3 o’clock. 3. Next year this magazine will publish some medical articles. 4. The surgeon was performing this operation from 10 till 11 o’clock. 5. The doctor has already examined all his patients. 6. Our students will be carrying out the experimental work at five o’clock. 7. Professor N. demonstrated the new device at the last lecture. 8. The teacher is examining a student at present. 9. Our teacher gives us some newspapers and magazines at the lesson. 10. My friend will have translated this medical article before you come.