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题目内容
（赤峰学院- 综合英语II(专升本)）
22. (单选题) Up to Tuesday.s attack, the worst school shooting in the U. S. was in March 1998 in Jonesboro, _______ two boys, aged 11 and 13, shot and killed a teacher and four girls.( )(本题3.0分)
A、 while
B、 where
C、 when
D、 then
A、 while
B、 where
C、 when
D、 then
参考答案
