1. _____ , but it is not the only one.
2. Private investments play ____ important a part in the countrys long-running economic expansion ____ no government dares to increase taxation on personal savings.
3. Before Freud shed light on dreams and extraordinary role of the subconscious, ____ .
4. ____ until Thomas Paine published The Common Sense and sparked off the American Revolution.
5. Though Hong Kong used to be one of the worlds most alluring shopping centres, ____ .
6. The overall quality of life in todays world cannot be improved ____ .
7. Some avalanches move no faster than 40 kilometres per hour, ____ .
8. Today the expansion of knowledge in astronomy, physics, chemistry, and biology is ____ vast and complex, and multiplying ____ quickly to be mastered fully.
9. Scientists rely on computers to model phenomena ____ would ____ be difficult to observe.
10. ____ suggestion he may make as regards the tax rate, lets not give any response ____ we have discussed the matter thoroughly together.