.They ________ to finish the project before Sunday, but they didn’t make it because of the heavy snow.
Not until about 2000 BC________________________done.
——Did you know any French before you arrived in Washington?——Never ____ it, actually.
Never before ___________in greater need of technical experts than it is today.
Only when _______ possible to settle the problem.
I’m afraid we can’t have coffee; there’s _____ left.