问题
选择题
Three suspects ________ in the terrorist attack in Kunming have been caught.
A．involved
B．to involve
C．being involved
D．involving
答案
答案：A
题目分析：句意：参与昆明恐怖袭击案的三个嫌疑人已经被抓住了。这里需要定语修饰suspects，因为be involved in“参与，牵连”，所以用过去分词做定语，选A。