问题
选择题
Not until the stadium of Bird’s nest was completed in the end _______ back to their normal position.
A．did our hearts got
B．did our hearts get
C．our hearts got
D．our hearts did get
答案
答案：B
题目分析：句意：直到鸟巢体育馆竣工我们的心才归回原位。not until...放在句首，句子部分倒装。A不对，因为前面已经有助动词did,后面动词必须用原型。故选B。