That day they there on foot but they took a taxi. The place was only 50 meters away from

问题补充：

That day they there on foot, but they took a taxi. The place was only 50 meters away from the railway station.

A. must have gone

B. shouldn’t have gone

C. could have gone

D. couldn’t have gone

答案：

A. must have gone

B. shouldn’t have gone

(答案→)C. could have gone

D. couldn’t have gone

解析：本题考查情态动词。could have done本能够做。句意：那天他们本能够步行，但他们打的。那个地方离火车站只有50米。