Answer
Объяснение:
1. Helen's sister was looked after all evening yesterday
2. This block of flats was designed by the modern architect 5 years ago.
3. The road must be crossed at the crosswalk.
4. The visitors were given fliers.
5. He won't be laughed at after this event.
6. All the letters must be written by tomorrow morning.
7. The documents must have been sent yesterday.
8. My car is dreamt to be painted red.
9. The exams can be passed without bad marks.
10. This equipment must be installed as soon as possible.
11. He has not been seen by them for ages.
12. These papers will be mailed by the secretary next week.
13. Many beautiful objects of paper are made by craftsmen in Japan.
14. These books must be returned within a fortnight.
15. 5000 cars were produced daily by this factory last year.