Complete the sentences with must or mustn't ! ​

11. My friends have been invited to tea
12. An English book has been given to me.
13. Has the letter been written yet?
14. A lot of interesting things have been told to us.
15. The paper have been written without mistakes.
16. The matter was discussed some days ago.
17. You are wanted on the phone.
18. My book was found on the windowsill.
19. Excellent shelters have been built in these mountains.
20. The exercises have been given out to all the students.
21. The boy was angry because he wasn’t allowed to go to the stadium by his mother.

1.The doorbell was ringing while i was sleeping
2.We saw an accident while we were driving a car
3.Tina fell asleep while she was Learning English
4.She was sunbathing, while we were playing golf
5.Sam wasn’t looking at the camera, when the photograph took a photo of him
6.Ben didn’t listen to me when i was talking to him!
7. The kids were eating a chocolate cake, when Mom came home
8. The students were walking in the park while the teacher was checking their tests
9. Kate was reading a book when the light went down
10.We were watching a film, when our friends called

Вот это нормальный ответ!