It is well known that good relationship between two countries_____ the development of mutual culture and economy.
_______________ while writing, he locked himself in his study.
The incomes of skilled workers went up. ______, unskilled workers saw their earnings fall.
The further falling of the stock market as reported today has _______ a fresh wave of selling.
In the current situation, ___________ the dollar goes above 1.85 reais, investors sell the greenback to take some profit.
Thanks to Mr. Smith the father and the son eventually______________ after ten years' cold relationship between them.