Sure! Here’s the completed passage based on the options provided:

The state of Queensland is still in shock tonight after the (1. **biggest**) natural disaster in Australian history. At precisely half past five this afternoon, (2. **the**) height of the Harristown rush hour, the city (3. **was rocked**) by a devastating earthquake that registered 6.5 on the Richter scale. What used to be Harristown's town hall is now just (4. **a pile**) of rubble. At (5. **least**) 50 people are believed to have been trapped (6. **as**) the building collapsed this afternoon and rescue workers are at this moment fighting (7. **to find**) survivors under the rubble. So far more than 60 people (8. **have**) confirmed dead and the figure is expected to rise. Reports from St Patrick's Hospital, itself severely (9. **damaged**) in the earthquake, indicate that a further 150 people have been admitted with (10. **serious**) injuries.

Here’s the list of answers for clarity:
1. D. biggest
2. A. the
3. B. was rocked
4. A. a pile
5. B. least
6. A. as
7. B. to find
8. C. have
9. B. damaged
10. A. serious