Itwasnotuntilshehadfinishedallherwork_____.
B
“it is not until that ⋯⋯” 是强调句型， “that ”引导的从句用正常语序，而以 “not until ⋯⋯”开头的句子中谓语要用倒装形式。
I can speak_____German.
Children who are over-protected by their parents may become_____.
_____you understand this rule ，you‘ll have no difficulty in dealing with such problems.