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38 II. Circle the correct word. 1. This patient will be/was seen by the doctor in 10 minutes. 2. I was/has asked to open the mouth wide. 3. When I came to the hospital, I was told that my brother was/had been operated on. 4. Cotton rolls are used by/with dentists to absorb saliva and other fluids. 5. Enamel  is covered/covers the tooth crown. 6. This drug  is/has taken four times a day. 7. These methods of treatment have been/were  introduced five years ago. 8. The patient was covered with/by a blanket by/with the nurse. 9. The patient has been/has  informed about his condition. 10. The results of the blood test were/had been given to the doctor yesterday. III. Complete using the correct passive form of the verbs in brackets. 1. He … (to examine) by professor next Monday. 2. The operation … (to perform) by Dr. Brown last night. 3. The temperature … (to take) two times a day. 4. Mononucleosis … (to cause) by the Epstein-Barr virus. 5. The patient’s thorax … (to X‑ray) now. 6. The mono virus … (to find) in saliva and mucus. 7. Tuberculosis bacilli … (to discover) by Robert Koch in 1882. 8. By the time the operation starts all the surgical instruments … (to sterilize). 9. Bacterial endocarditis … (to treat) with antibiotics. 10. Children who … (to immunize) five years ago … (still/to follow up). IV. Complete the sentences using the correct passive form of the verbs in the box: to give to call to control to visit to cause to characterize to find to put to take care of not to recommend 1. Coronary artery disease … by thickening of the inside walls of the coronary arteries. 2. Don’t worry! Your patients … 3. He … by the doctor twice last week. 4. Before you have this test, you … a medicine to make you relaxed and sleepy.