A-A+
Three weeks after the suicide bombing the pol
问题详情
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
参考答案
正确答案：B
解析：句意：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；on the verge后跟of结构表示“在……的边缘”；on the spot当场，在现场；on the loose散漫，放荡。
