问题 单项选择题

Three weeks after the suicide bombing, the police were still hunting for bombers for they believe more were ______.

A.on the verge

B.on the sly

C.on the spot

D.on the loose

答案

参考答案:B

解析: 本题意为“自杀性爆炸三个星期之后,警方还在搜寻爆炸者,因为他们相信还有更多的爆炸者在暗地里行动”。on the sly“偷偷地,暗地里”,如:Took extra payments on the sly. 暗中接受多给的钱。on the verge后跟of结构表示“在……的边缘”;on the spot 表示“当场,在现场”;on the loose表示“散漫,放荡”。四个选项中只有B项符合题意。

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