Question

Not until ___to do my homework ____ how much time I had wasted playing computer games.

   A. I began; I realized              

B. I began; did I realize

   C. did I begin; I realized          

D. did I begin; did I realize

 

Answer 1

【答案】

B

【解析】考察倒装句。Not until放在句首时，后面的状语从句不要倒装，但是后面的主句应该使用部分倒装的形式。故B正确。