Late in March, 1841, his cold turned into pneumonia.

VOA: special.2009.01.29

unemployment rate for March. The proportion of jobless Americans has risen steadily since the United States sank into a recession more than a year ago.

VOA: standard.2009.04.02

Mr.Obama ordered an additional 21,000 forces into Afghanistan in March, boosting the U.S.total to 68,000.

VOA: standard.2009.10.01