问题
选择题
So absorbed ________ in the research that she didn’t hear someone knocking at the door.
A．she did
B．did she
C．she was
D．was she
答案
答案：D
题目分析：句意：--她是如此专注于研究以至于他没有听到有人敲门。这里使用了so…that…句型，so+adj/adv.如果放在句首，句子用部分倒装，因为词组be absorbed in专注于，所以将was提前，所以选D。