SnowdenarrivedatSheremetyevoInternationalairportonJune...

问题详情：

 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

【回答】

B

知识点：定语从句

题型：选择题