Snowden arrived at Sheremetyevo International airport on June 23, he was prevented from leaving for six weeks after the U.S. canceled his passport.
A. which
B. where
C. when
D. what
网友回答
A. which
(答案→)B. where
C. when
D. what
解析：句中Sheremetyevo International airport是先行词，其在定语从句中作地点状语，故用关系副词where引导。句意：斯诺登于6月23日到达Sheremetyevo国际机场，美国取消他的护照之后，他在那里被滞留6个星期。