天山第3题仍有疑问

oliviachen

3. In many upper-class Egyptian homes, French was spoken within the family, just as it had once been among the Russian aristocracy.
(A) just as it had once been among the Russian aristocracy
(B) just like it once been among the Russian aristocracy
(C) just as Russian aristocracy had once done
(D) similar to what the Russian aristocracy had once done
(E) like what had once been done by the Russian aristocracy

还是不明白为什么C不对？

JerryGuan

法语在E国上流社会流传，就像当年在R国一样。

答案A；C答案，与划线前不对称；造成done不知是指代谁？