Complete the following sentence with a (compound) word derived from the one(s) given in bracket. Write your word on the answer sheet.
The police arrested the man who was accused of a serious terrorist （ ）. (act)
【正确答案】：ACTION
【题目解析】：
本题考查常见动词的名词。
由a serious可知，空缺处应填名词，act作动词意为“行动”，其名词形式是action意为“行径、行动”，terrorist action意为“恐怖主义行径/行为”。
句意：警察逮捕了那个被指控严重恐怖犯罪的男子。此处意译为“犯罪”。