---It has been decades since we last met.---But I still remember the graduation party, believe it or not, ________we toasted for our separation and reunion.
As we grow up, it always _______ that after we give something up, we gain something new in its place.
You were silly __________ your car, otherwise it wouldn’t have been stolen.
The world will be different, and we will have to be prepared to ________ the change.
He hurried to the station only _______ that the train had left.
— Are you glad to hear from her? — Of course. ___________, we last met more than thirty years ago.