Complete the following sentence with a (compound) word derived from the one(s) given in bracket.
The policeman’s （ ） was to discover the murderer. (assign)
【正确答案】：ASSIGNMENT
【题目解析】：
根据前文policeman's，判断出空格处应该填名词的形式，assign的名词形式为assignment任务，且符合句意。句意：警察的任务是找到凶手。