be on

be on  {v. phr.}
1. To be in operation; be in the process of being presented.
The news is on now on Channel 2; it will be off in five minutes.
2. To be in the process of happening; to take place.
We cannot travel now to certain parts of Africa, as there is a civil war on there right now.
Categories: travel {v. phr.}

'be on' on video