问题
选择题
Not until he left his home _____ to know how important the family was for him.[ ]
A. did he begin
B. had he began
C. he began
D. he had begun
答案
答案：A
搜题请搜索小程序“爱下问搜题”
Not until he left his home _____ to know how important the family was for him.[ ]
A. did he begin
B. had he began
C. he began
D. he had begun
答案：A