Change the following sentences into the Passive Voice using the Indefinite Tenses (give two forms where possible).
С) Using the Continuous Tenses

Example: They are solving a difficult problem now. — The problem is being solved поw.

1. Don't come in! The professor is examining students. 2. Can I read the article? — No, the secretary is typing it. 3. We had to hurry. They were waiting for us. 4. It was noisy. Nobody was listening to him. 5. Does he realize that they are laughing at him? 6. Look at this man. I think he is following us. 7. Listen carefully! He is giving a very interesting talk. 8. The waiter is serving us rather fast. 9. The secretary was looking through morning mail. 10. The interpreter is translating their conversation rather well. 

D) Using the Perfect Tenses

Example: They have already brought the medi­cine. — The medicine has already been brought.

1. We have repaired our house lately. 2. When the fire brigade came, the fire had destroyed the building. 3. The athlete has shown much better results since this coach trains him. 4. I will have answered all the business letters by noon. 5. The president of the board has signed the document. 6. Is she washing the floor? — No, she has already washed it. 7. By his arrival they had repaired his car. 8. He has booked the tickets and the clerk will have brought them by 2 o'clock. 9. They had painted the house by his arrival. 10. The police haven't found the reason for the accident yet. 
^E) Using modal verbs
Example: He can do this work. — The work can be done (by him).

1. She can find a job easily. 2. The matter is urgent. They should phone her immediately. 3. The boss wants Mr. Black. You must find him. 4. I can make an interesting offer to you. 5. He's got a pay rise and now they can buy a new house. 6. You must send the document as quickly as possible. 7. The weather is warm. She may plant the flowers. 8. The document is of great importance. He must show it to us. 9. You should avoid the center of town during rush hours. 10. Their kitchen is large and they can use it as a dining room. 

1. Students are being examined by the professor. 2. The article is being typed by the secretary. 3. we were being waited by them. 4. he wasn't being listened 5. he is being laughed by them 6. we are being followed by the man 7. talk is being given 8. we are being served 9. morning mail was being looked 10 the conversation is being translated very well