It has been more than two years since he has been to a hospital emergency room because of asthma.
VOA: special.2009.07.28
The competition was first held in two thousand two and has taken place every two years since two thousand five.
VOA: special.2009.10.27
Then, almost two years since announcing his candidacy for America's highest office, Mr. Obama began the work of president.
VOA: special.2009.01.24
It has been about forty years since the United States Food and Drug Administration approved a drug especially for treating lupus.
VOA: special.2010.06.15
This September eleventh will be nine years since the al-Qaida terrorist attacks on the United States.
VOA: special.2010.08.05
In the close to forty years since, no one has set foot on the moon.
VOA: special.2010.04.28
The work was first performed in Germany in two thousand to mark two hundred fifty years since the death of the composer Johann Sebastian Bach.
VOA: special.2010.07.19
It has collected population records every ten years since the end of the seventeen hundreds.
VOA: special.2010.06.28
So they remain mostly unchanged in the hundreds of years since they were built.
VOA: special.2009.03.04
Every ten years since seventeen ninety the Constitution has required a population count.
VOA: special.2010.03.20
It has been 3.5 years since the bombing of the mosque triggered one of the worst displacement crises in recent times.
VOA: standard.2009.09.20
It seems hard to believe that it had been 62 years since the Americans had won Olympic gold in the four-man bobsled.
VOA: standard.2010.02.28
It is many years since we started with the United Nations decade for solidarity.
VOA: standard.2009.04.05
In 2009,Russians marked 300 years since their country defeated Sweden in the decisive Battle of Poltava, in which Russia replaced that Scandinavian country as the great power of Northern Europe.
VOA: standard.2009.12.25
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