Question

【题目】If ________ to look after luggage for someone else, inform the police at once.

A. asked B. to ask

C. asking D. having asked

Answer 1

【答案】A

【解析】

试题分析：考查非谓语动词。句意：如果被要求为他人照看包裹，请立即通知警察。主句为祈使句，省略了主语you，根据语境可知，you与ask之间为动宾关系，故选A项。