I want to learn French, but I don't know the best way to __________ it.
The doctor insisted that only in this ______ could the patient survive in the operation.
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.
It was at this shop ______ I came across one of my old friends.
His father told me that he ____ for the United States three days _______.