Obviously, the advantage we take of solar energy is ________ enough.We have to work still harder.
While prices of houses are rising so fast, many people are working out ways to their expenses.
The success of a government should be in terms of the health and happiness of the people as well as the development of economy.
The European Central Bank yesterday the document was genuine but refused to make any further comment.
Happiness and success often come to those who are good at recognizing their own .
The government decided to tear down the old bridge, which was not strong enough to allow the ___ of heavy vehicles (车辆).