All the arrangements should have been completed prior ____

All the arrangements should have been completed prior _____our departure.

All the arrangements should have been completed prior _____our departure.
A、in
B、to
C、by
D、before
【正确答案】：B
【题目解析】：所有的安排都应该在我们出发之前完成。prior to 优先固定搭配

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