I
1. is spoken
2. was invented
3. were taken
4. has been made
5. is being painted
6. was stolen
7. will have been achieved
8. hadn't been invited
9. was built
10. has been lost
11. is not allowed
12. have been released
13. hasn't been finished
14. had been delivered
15. are trained
II
1. destroyed
2. was dug
3. is being written
4. built
5. will be found
6. had eaten
7. is being built
8. has already been completed
9. is still being repaired
10. is included
11. hadn't been invited
12. put
13. had left
14. was being redecorated
15. celebrate
III
1. were invited
2. will be built
3. has been studied
4. had been destroyed
5. were you told
6. will be completed
7. have been discussed
8. will be taken
9. was lent
10. be repaired
11. was written
12. will be opened
13. are being cut
14. was knocked
15. has been smashed
Объяснение:
It is a calculating machine that speeds up financial calculations.