Mr. Green likes traveling. This summer he is going to Spain for.A. studyB. trainingC. vaca

问题补充：

Mr. Green likes traveling. This summer he is going to Spain for.

A. study

B. training

C. vacation

D. business

答案：

A. study

B. training

(答案→)C. vacation

D. business

解析：前句的意思是格林先生喜欢旅行，后句表示的应该和旅行有关的单词，度假意思较符合，故本题选C。