Question

Not unti his fellows criticized him ______ to admit his mistake.

1. A.
   does he begin
2. B.
   did he begin
3. C.
   began he
4. D.
   had he begun

Answer 1

B
not until 位于句首，句子使用部分倒裝。觀察句子，從criticized可知句子應與過去有關，排除A；C答案為完全倒裝。
考點：考查倒裝。
點評：倒裝分為部分倒裝和完全倒裝。要分清他們的概念及使用規則。