It was until last year that he .
A. left his home town for a new start
B. came to realize the importance of leaving English
C. worked as an English teacher at a middle school
D. set out to build a new house of h his own
网友回答
A. left his home town for a new start
B. came to realize the importance of leaving English
(答案→)C. worked as an English teacher at a middle school
D. set out to build a new house of h his own
解析：强调句型。注意until引导的句型是肯定的意思其谓语动词应该是延续性动词。