Hello everyone,
My teacher said, that "have" in refer to a possession never works with "ing".
But now, I found this sentence:
Concorde, the world's fastest passanger plane, was developed by France and Britain together. In the 1950's, both countries dreamed of
having a supersonic plane.
In this sentence "having" refers to a possession

. Or did I misunderstand it?
Would you please explain me, why there is used "having"?
Thanks in advance,
Dany