When the water heater is working correctly, water will flow from the storage tank to the collector and back again.

VOA: special.2009.04.20

The Purdue Online Writing Lab also explains how to use an apostrophe correctly in possessives and other cases.

VOA: special.2010.02.11

He did certain things wrong. And others which he did correctly were done over and over again.

VOA: special.2009.10.31

He says the organization helps trainees correctly measure their skills and abilities.

VOA: special.2011.06.10

His owner says he has correctly predicted the World Cup's four quarterfinal games and Spain's semifinal victory over Germany.

VOA: standard.2010.07.09

Centers to approve visa candidates will be set up,registered, and equipped under the Health Ministry to prevent anyone from obtaining visa documents that are not correctly approved.

VOA: standard.2009.07.23

"Clearly the pictures are disturbing," "but what I would also say to people is that as I think members of the committee have correctly pointed out, pictures are a snapshot,all right, and what we will not do and what I will not do is make assumptions prior to the completion of our investigation.

VOA: standard.2009.04.21