Передайте следующие предложения в passive voice. 1. i saw a ufo yesterday. 2. mike has just read a very interesting book. 3. angela often writes letters to her boyfriend. 4. they had pulled down the house before the revolution began. 5. he will pass his exam successfully. 6. i must do this work in time. 7. she will send a mail soon. 8. we are giving a party now. 9. i brought the documents last week. 10. he always invites a lot of friends to his birthday party.

1) The UFO was seen yesterday
2) A very interesting book was read by Mike
3) The letters are often written by Angela to her boyfriend
4) The house was pulled down before the revolution
5) His exam will be passed successfully
6) This work have to be done by me
7) A mail will be sent soon
8) A party is given by us
9) The documents were brought last week
10) A lot of friends are invited to his birthday