So ____ that no one could catch up with him.A.did he run quickly B.he ran quickly C.quickly did

C

So quickly did he run

So quickly did he run (是C么,打漏了吧）
So + 副词 是状语前置,引起局部倒装.
注意 so+形容词 的话,是主语补语前置,要全部倒装,如So small was the mark that I could hardly see it.

quickly did he run
解析：so在句首，句子要部分倒装