The only thing that's wrong is your teacher. "The success we had" is a noun phrase. It's the subject of the verb "was".
New words, one handy idiom, and a 2-minute quiz — delivered to your inbox to keep your streak alive.
DMWThe deer that the lion attacked tried to fight it off with its antlers.Hello DMW,
The movie that I saw was highly acclaimed by the reviewers.
The little boy that my wife and I raised has grown into a fine young man.
SurferJust wanted to ask, shouldn't there be a comma before tried, was, and has?No. What makes you think there should be?