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(2013·四川省乐山一模)Thepupilswereplayinggamesintheclassroomagunmanenteredandbeganshootingwildlyatthem.A.whileB.whenC.asD.before

题目详情
(2013·四川省乐山一模)The pupils were playing games in the classroom ________ a gunman entered and began shooting wildly at them.
A.while B.when
C.as D.before
▼优质解答
答案和解析
B

选B 考查连词。句意:学生们正在教室做游戏,这时一名持枪的男子进来并对着他们开始疯狂扫射。连词when意为“这时”,可接短暂性动词。