单选题
After receiving the news of his mother's car accident, he postponed a ______ to Europe.
A. trip B. hike C. travel D. tour
A
B
C
D
【正确答案】
A
【答案解析】
[解析] a trip to Europe欧洲之行；hike远足，增加；travel旅行；tour旅行，游历，旅游
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