【题目】The manager requested that the task ________by five o'clock without delay.
A.must be finished
B.would be finished
C.was finished
D.be finished

【答案】D
【解析】句意：经理要求5点之前要完成任务，不得延迟。这里request表示“要求”，引导宾语从句时要用虚拟语气，should+动词原形，should可以省略；另外主语任务和动作完成之间构成被动关系，故选D。