As long as cows have been in existence, or the whole Bos primigenius species and subspecies have been in existence.
European Breakdown Cover is a program of that provides roadside assistance to English speaking motorists in Europe. This program has been in existence for the past 100 years.
Philadelphia College of Pharmacy was the first institution in the United States to offer pharmaceutical education. The college has been in existence since 1821.
Helium is has been in existence since the beginning of the universe.
they have been in existence for 110 years since 1901.
the present flag has been in existence since way date
Yes. Schools have been in existence since 1635 when the first colonial schools were opened. Education was very important in the colonies and education laws were passed requiring children to attend school and for townships to have public schools.
"have been in existence" is the simple predicate. It expresses the action of the sentence.
A United States federal program to fund abstinence only sex education was initiated in 1996. The concept has been around for a lot longer, of course.
General Mills Box Tops for Education program has been around in California and the rest of the United States of America since 1996 and so far over half a billion has been raised for schools.
The Rockets have played in Houston since 1971 after moving from San Diego.
Bernardaud is a company that has been in existence since 1863. For the last 150 years they have been leaders and innovators in the tableware industry.