This is a correct use of English.
It is typically used when expressing the start of something significant or important. For example: "The opening ceremony is today, and with that, all has begun."
Political leaders in several countries, pragmatists all, have begun to reposition themselves for the next phase of the drama in Iraq.
In this country, they all had begun taking flying lessons, in Phoenix, San Diego and South Florida.
Mr. Goglia said that all 19 had boarded in Charlotte but that all had begun their trips elsewhere.
And now that the recession is over, retail rents over all have begun to rise, signifying changes in some notable blocks and streets in Manhattan.
If a group of Bayesian individuals all had begun from the same initial probabilities, then simply sharing their evidence would lead them all to the same final probabilities.
Six terminally ill volunteers were experimented on, and all had begun recovering.
Nearly all had begun consumption after their cancer diagnosis.
Nurses (n=25, table 1) from each site were then purposively sampled on the basis that they had completed the requisite NIMART training, although not all had begun initiating patients on ART.
All this has begun to weigh on investors' minds.
The starting all over again has begun.
