Some passengers were walking through one of the big halls at De Gaulle Airport _____ the whole roof

题目简介

Some passengers were walking through one of the big halls at De Gaulle Airport _____ the whole roof

题目详情

Some passengers were walking through one of the big halls at
De Gaulle Airport _____ the whole roof (屋顶) fell down.
[     ]
A. while
B. as soon as
C. when
D. after
题型:单选题难度:中档来源:同步题

答案

C

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