I went there in 1988, and it was the only occasion when I ______ the journey in.

游客2024-10-26  1

问题 I went there in 1988, and it was the only occasion when I ______ the journey in.exactly two days.

选项 A、must make
B、could make
C、must have made
D、was able to make

答案 D

解析 答案是D,因为当时是能够做到的事;而could只表示可能性,而没有做出这一动作。must仅表示推测。
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