1. Tom is cleaning the classroom. - The classroom is being cleaned by Tom.
2. Mr. Green colected stamps. - Stamps were collected by Mr. Green .
3. The work was done (has been done) on time. - They did (have done) the work on time.
4. The telegramm will be sent on time. - They will send the telegramm on time.
5. I will send the telegramm tomorrow. - The telegramm will be sent tomorrow.
6. We received the answer two days later. - The answer was received two days later.
7. The answer will be received in two days. - They will receive the answer in two days.
8. They will show you the way to the university. - You will be shown the way to the university.
9. The house was built 5 years ago. - They built the house 5 years ago.
10. The text was translated yesterday. - They translated the text yesterday.