—Did you see who the driver was?

—No, the car ran so fast ____ I couldn’t have a good look at his face.

A. that B. which C. as D. after

A

本题主要考查so that引导的结果状语从句，so＋形容词或副词＋that ...引导的肯定的结果状语从句，意思是“如此……以致于……”，根据句意，故选A.意思：这跑得太快以至于我不能看清他的脸。