1) переделайте следующие предложения в passive voice.
1. they teach three foreign languages at school.
2. we received this letter after his departure.
3. who discovered the circulation of blood?
4. they are selling delicious fruit ice cream there now.
5. bees gather honey from flowers.
6. they don’t think much of him.
7. we have been looking for the whole morning.
8. he has just written this computer programme.
9. have dogs ever attacked you?
10. the doctor prescribed her new medicine.

2) передайте следующие предложения в active voice.
1. the room was cleaned and aired.
2. have all these books been read?
3. the letter has just been typed.
4. he has been told everything, so he knows what to do now.
5. betty was met at the station.
6. this house was built last year.
7. when will this book be returned to the library?
8. the light has not yet been turned.
9. by three o’clock everything had been prepared.
10. all the questions must be answered.