1. was written, it is still read
2. was made
3. was painted, will be painted
4. will be shown
5. be kept
6. are not mentioned
7. was placed
8. is visited
9. will be spoiled
10. were washed
11. was traslated
12. had been washed, was waxed and polished
13. will have been revised
14. was delayed
15. had been prepared, were washed