The verb in the sentence is grow.
A verb is a word describing an action.
Just say "The language..." Please provide more info about the question. Do you want it to be formal? Are you writing an essay for fun so it does not need to be formal?
Generally, I'd write "Frank expressed his wish -- that Jackie had lived to see the moment," but technically there is nothing wrong with that sentence.
This probably isn’t the best place to find out, seeing as how non-academic questions are deleted so quickly.