题目内容：
A group of American soldiers were walking along the road in Irap when a bomb was _____, three of whom were killed.A、set about
B、set out
C、set up
D、set off
参考答案：
选择题：A group of American soldiers were walking along th
- 题目分类：滁州学院-学前教育
- 题目类型：选择题
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A、set about
B、set out
C、set up
D、set off