Ответ:
1. This medicine can be taken before or after a meal.
2. Pronunciation of this word should be looked up in a dictionary.
З. The patient had to be operated on immediately.
4. This book can be found in the district library.
6. He has been offered a teacher job at school.
7. I have been promised two tickets to the movies.
8. He will be sent abroad in the summer.
9. I was shown the way to the nearest village.
10. This article should not be referred to.
11. The teacher was listened to with great interest.
12. He was awarded a watch.
13. He will be laughed at.
14. If you have a fever, the doctor should be sent for at once.
15. This play is being talked about a lot now.
16. Children are taken care of very well in kindergartens.
17. This argument has to stop.
18. Your attention should be drawn to your pronunciation.
19. Can his word be relied on?
20. I know that his proposal will be argued against.
21. He was being looked for everywhere.