摘要：2．Some passengers were walking through one of the big halls at Paris' Charles De Gaulle Airport the whole rooffell down. A. while B. as soon as C. when D. after
网址：http://m.1010jiajiao.com/timu3_id_2431334[举报]
Some passengers were walking through “one of the big halls at Paris” Charles De Gaulle Airport ________ the whole roof fell down.
- A.while
- B.as soon as
- C.when
- D.after