- Who ran of all in the sports meeting? - Hector did I think.A. fastB. fasterC. the fast

问题补充：

- Who ran of all in the sports meeting?

- Hector did, I think.

A. fast

B. faster

C. the fastest

D. most fast

答案：

A. fast

B. faster

(答案→)C. the fastest

D. most fast

解析：句意：在运动会上在所有人当中谁跑的最快？我认为是Hector。根据句子中的of all可知应该是询问的谁跑的最快，即用副词的最高级；故选C。