Having finished his morning work,the manager stood up behind his chair,_____himself.(青岛市)
On the chairs _________ , who had come to Dalian looking for jobs.
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.