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
C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。