In the meantime, the question facing business is whether such research is ______ the costs.
The billionaire all his possessions to his son when he died.
A fully-grown blue whale 110 feet in height and several tons.
Only by increasing the number of doctors by 50 percent properly in this hospital. (2013 .全国 )
My elder brother wants to buy a computer, so that he can carry it around when he travels.
-Try not to work yourself too hard. Take it easy. -Thanks. (2012 .全国Ⅱ)