Write the sentences using personal and impersonal constructions.
1 Experts believe that they will have renovated the clock
tower by the end of the year.
The clock tower ...
It is believed
2 They say that the Salisbury Cathedral clock in England is
the oldest working clock.
The Salisbury Cathedral clock in England
It
...
3 They estimate that the oldest timekeeping device is a
sundial from Egypt that dates back to 1500 BC.
A sundial from Egypt that dates back to 1500 BC
it
4 Some people think that time travel is possible.
Time travel
It
5 They say that the 3D Quantum Gas Atomic Clock is the
most precise clock in the world.
The 3D Quantum Gas Atomic Clock...
It ..
1. was watching
2. died
3. rang
4. was cooking
5. was having
6. came
7. was going
8. came
9. were studying
10. happened
11. was walking
12. was sleeping
13. met
14. was skiing
15. was shopping
16. started to rain (?)
17. saw
18. were fighting
2)
1. heard, were speaking
2. told, were playing
3. was listening, dropped
4. was making, rang
5. were walking, started
6. was riding, hit
7. were sleeping, began
8. was having, came
9. was planting, was jumping
10. were having, went
11. was eating, landed
12. were playing, came
13. left, arrived
14. was reading, heard
15. was having, visited
16. was crossing, saw
17. was choosing, came
1. was watching
2. died
3. rang
4. was cooking
5. was having
6. came
7. was going
8. came
9. were studying
10. happened
11. was walking
12. was sleeping
13. met
14. was skiing
15. was shopping
16. started to rain (?)
17. saw
18. were fighting
2)
1. heard, were speaking
2. told, were playing
3. was listening, dropped
4. was making, rang
5. were walking, started
6. was riding, hit
7. were sleeping, began
8. was having, came
9. was planting, was jumping
10. were having, went
11. was eating, landed
12. were playing, came
13. left, arrived
14. was reading, heard
15. was having, visited
16. was crossing, saw
17. was choosing, came