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。
Icanspeak_____German.
Itwasnotuntilshehadfinishedallherwork_____.
Thegirlwhofoundtheringreceivedagenerous_____offivepounds.
_____youunderstandthisrule，you‘llhavenodifficultyindealingwithsuchproblems.